Infectious Diseases

How did toilet paper become the unofficial symbol of anxiety during the pandemic? Empty store shelves are a stark reminder of how COVID-19 has taken a toll on people.

gmcoop/E+

At the beginning of the pandemic, stay-at-home orders drove people to buy large amounts of household goods, especially toilet paper. Demand grew to unforeseen heights in March 2020, with $1.45 billion in toilet paper sales in the 4-week period ending March 29, up 112% from the year before, according to IRI, a Chicago-based market research firm.

As the Delta variant drove a COVID-19 resurgence this summer, market research suggests that almost one in two Americans started stockpiling toilet paper again over fears that supply would run out. The higher demand causes ripples through the retail chain, and a growing number of stores are again facing challenges in stocking toilet paper.

Yet there is plenty for everyone if people don’t stockpile too much, according to paper industry market analyst Ronalds Gonzalez, PhD, an associate professor of conversion economics and sustainability at North Carolina State University, Raleigh.

“As long as people buy what they actually need and don’t get into a panic, there won’t be any issue with the supply of hygienic tissue,” he says, adding that “too much” would equate to stockpiling 6-8 months’ worth of toilet paper, as some people did early in the pandemic.

But retailers are worried that history will repeat itself. In late September 2021, warehouse retail giant Costco told Wall Street analysts that it decided to limit customer purchases of essential items like toilet paper and water. Another retailer, Sam’s Club, began limiting customer purchases of supplies like toilet paper at the end of July.

“We are wired to run with the herd,” says Bradley Klontz, PsyD, an associate professor of practice at Creighton University Heider College of Business, Omaha, N.E., who specializes in financial psychology.

“Quite literally, the last person to get to Costco doesn’t get the toilet paper, so when the herd is running in a certain direction, we feel a biological imperative to not be that last person. That fear of scarcity actually creates the experience of scarcity,” he explains.
 

The science behind the stockpile

People are collectively alerted by photos shared on social media showing store shelves stripped of toilet paper. Those images triggered consumers to rush out and buy bathroom tissue, even if they didn’t need it – and that herd behavior created toilet paper shortages.

Now, a year and half into the pandemic, people are hypervigilant to danger. Any hint of a possible toilet paper shortage can provoke anxiety and the desire to stockpile.

“It’s an adaptive response to having just gone through the experience” of seeing empty store shelves, says Dr. Klontz. He advises people to take a deep breath before buying extra toilet paper and then assess whether it is truly needed.

Deep in our brains is the limbic system, a group of structures that rules over emotions, motivation, reward, learning, memory, and the fight-or-flight response to stress and danger. When a person senses danger, the brain activates hormones to raise blood pressure and heart rate, increase blood flow, and boost the breath rate, making the body ready to fight or flee under threat.

Once everything settles, the body activates chemicals like dopamine that bring on positive feelings of well-being, rewarding that flight-or-fight response. In this way, the brain powerfully reinforces a key survival instinct.

This sequence of experiences and the brain chemistry behind them may explain why people panic-buy toilet paper.

“With toilet paper, my limbic system starts thinking about a perceived threat to safety,” says Julie Pike, PhD, a psychologist in Chapel Hill, N.C., who specializes in anxiety, hoarding, and posttraumatic stress disorder.

She notes that, in stockpiling toilet paper, “we avoid a perceived threat and then we are chemically rewarded” with dopamine. A storage closet full of toilet paper after a perceived threat of scarcity – no matter how unfounded – brings on that satisfied feeling.
 

When the market shifted

Paper producers make hygiene paper for two markets: the commercial (think: those big rolls of thin paper used in offices, schools, and restaurants) and the consumer (the soft paper you likely use at home). In the spring of 2020, the commercial market plummeted, and the consumer market skyrocketed.

Generally, the consumer toilet paper market is steady. The average American uses about 57 toilet sheets a day and about 50 pounds annually. Grocery stores and other retailers keep just enough toilet paper on hand to meet this steady demand, meaning panic buying at the start of the pandemic quickly depleted stocks. Paper makers had to change production to meet higher consumer demand and fewer commercial buyers.

By the end of the summer of 2020, toilet paper makers had adjusted for the market shift and caught up with demand, as consumers worked through their stockpiles of paper. But retail inventories remain lean because toilet paper doesn’t carry huge profit margins. For this reason, even healthy stocks remain sensitive to sudden shifts in consumer demand, Dr. Gonzalez says.

“If people buy more than they should, then they are just buying from other people,” creating an unnecessary scarcity of toilet paper, he says.
 

The supply chain

It is true that the supply chain is under unprecedented strain, leading to higher prices for many goods, says Katie Denis, vice president of research and industry narrative at the Consumer Brands Association, Washington, which represents toilet paper makers Georgia-Pacific and Procter & Gamble. Consumers should expect toilet paper to be available, but there may be fewer options for product sizes, she says.

Still, Dr. Gonzalez says consumers should not worry too much about the global supply chain affecting the domestic toilet paper supply. The raw material for toilet paper production is available domestically, and more than 97% of the supply on U.S. retailer shelves is made in the United States, he says.

In modern society, toilet paper is a primary link to civilization, health, and hygiene. While there is no easy substitute, alternatives do exist A bidet, for example, is a device that can spray water on the genital area. Other options are reusable cloths, sponges, baby wipes, napkins, towels, and washcloths.
 

Human health and hygiene

“Compared to many other items, toilet paper can’t really be replaced,” says Frank H. Farley, PhD, a professor of psychological studies in education at Temple University, who studies human motivation. “It is a unique consumer item that is perceived to be extremely necessary. In that way, it plays into that survivor mentality, that having it is necessary for survival.”

Being without it can truly seem like an existential threat.

New York City emergency planner Ira Tannenbaum advises families to assess their usage of essential household supplies like toilet paper (you can do so through this toilet paper calculator) and keep at least a 1-week supply on hand in case of emergency. New York City has posted recommendations to families for emergency planning, including the guidance to “avoid panic buying.”

Dr. Pike says she would stockpile a bit more, something that could be done gradually, before there’s a panic. She says that if people are tempted to buy more out of anxiety, they should remind themselves that shortages arise because of panicky purchasing.

“Leave some for other families – other people have children and partners and siblings just like us,” she says.

A version of this article first appeared on WebMD.com.

How did toilet paper become the unofficial symbol of anxiety during the pandemic? Empty store shelves are a stark reminder of how COVID-19 has taken a toll on people.

gmcoop/E+

At the beginning of the pandemic, stay-at-home orders drove people to buy large amounts of household goods, especially toilet paper. Demand grew to unforeseen heights in March 2020, with $1.45 billion in toilet paper sales in the 4-week period ending March 29, up 112% from the year before, according to IRI, a Chicago-based market research firm.

As the Delta variant drove a COVID-19 resurgence this summer, market research suggests that almost one in two Americans started stockpiling toilet paper again over fears that supply would run out. The higher demand causes ripples through the retail chain, and a growing number of stores are again facing challenges in stocking toilet paper.

Yet there is plenty for everyone if people don’t stockpile too much, according to paper industry market analyst Ronalds Gonzalez, PhD, an associate professor of conversion economics and sustainability at North Carolina State University, Raleigh.

“As long as people buy what they actually need and don’t get into a panic, there won’t be any issue with the supply of hygienic tissue,” he says, adding that “too much” would equate to stockpiling 6-8 months’ worth of toilet paper, as some people did early in the pandemic.

But retailers are worried that history will repeat itself. In late September 2021, warehouse retail giant Costco told Wall Street analysts that it decided to limit customer purchases of essential items like toilet paper and water. Another retailer, Sam’s Club, began limiting customer purchases of supplies like toilet paper at the end of July.

“We are wired to run with the herd,” says Bradley Klontz, PsyD, an associate professor of practice at Creighton University Heider College of Business, Omaha, N.E., who specializes in financial psychology.

“Quite literally, the last person to get to Costco doesn’t get the toilet paper, so when the herd is running in a certain direction, we feel a biological imperative to not be that last person. That fear of scarcity actually creates the experience of scarcity,” he explains.
 

The science behind the stockpile

People are collectively alerted by photos shared on social media showing store shelves stripped of toilet paper. Those images triggered consumers to rush out and buy bathroom tissue, even if they didn’t need it – and that herd behavior created toilet paper shortages.

Now, a year and half into the pandemic, people are hypervigilant to danger. Any hint of a possible toilet paper shortage can provoke anxiety and the desire to stockpile.

“It’s an adaptive response to having just gone through the experience” of seeing empty store shelves, says Dr. Klontz. He advises people to take a deep breath before buying extra toilet paper and then assess whether it is truly needed.

Deep in our brains is the limbic system, a group of structures that rules over emotions, motivation, reward, learning, memory, and the fight-or-flight response to stress and danger. When a person senses danger, the brain activates hormones to raise blood pressure and heart rate, increase blood flow, and boost the breath rate, making the body ready to fight or flee under threat.

Once everything settles, the body activates chemicals like dopamine that bring on positive feelings of well-being, rewarding that flight-or-fight response. In this way, the brain powerfully reinforces a key survival instinct.

This sequence of experiences and the brain chemistry behind them may explain why people panic-buy toilet paper.

“With toilet paper, my limbic system starts thinking about a perceived threat to safety,” says Julie Pike, PhD, a psychologist in Chapel Hill, N.C., who specializes in anxiety, hoarding, and posttraumatic stress disorder.

She notes that, in stockpiling toilet paper, “we avoid a perceived threat and then we are chemically rewarded” with dopamine. A storage closet full of toilet paper after a perceived threat of scarcity – no matter how unfounded – brings on that satisfied feeling.
 

When the market shifted

Paper producers make hygiene paper for two markets: the commercial (think: those big rolls of thin paper used in offices, schools, and restaurants) and the consumer (the soft paper you likely use at home). In the spring of 2020, the commercial market plummeted, and the consumer market skyrocketed.

Generally, the consumer toilet paper market is steady. The average American uses about 57 toilet sheets a day and about 50 pounds annually. Grocery stores and other retailers keep just enough toilet paper on hand to meet this steady demand, meaning panic buying at the start of the pandemic quickly depleted stocks. Paper makers had to change production to meet higher consumer demand and fewer commercial buyers.

By the end of the summer of 2020, toilet paper makers had adjusted for the market shift and caught up with demand, as consumers worked through their stockpiles of paper. But retail inventories remain lean because toilet paper doesn’t carry huge profit margins. For this reason, even healthy stocks remain sensitive to sudden shifts in consumer demand, Dr. Gonzalez says.

“If people buy more than they should, then they are just buying from other people,” creating an unnecessary scarcity of toilet paper, he says.
 

The supply chain

It is true that the supply chain is under unprecedented strain, leading to higher prices for many goods, says Katie Denis, vice president of research and industry narrative at the Consumer Brands Association, Washington, which represents toilet paper makers Georgia-Pacific and Procter & Gamble. Consumers should expect toilet paper to be available, but there may be fewer options for product sizes, she says.

Still, Dr. Gonzalez says consumers should not worry too much about the global supply chain affecting the domestic toilet paper supply. The raw material for toilet paper production is available domestically, and more than 97% of the supply on U.S. retailer shelves is made in the United States, he says.

In modern society, toilet paper is a primary link to civilization, health, and hygiene. While there is no easy substitute, alternatives do exist A bidet, for example, is a device that can spray water on the genital area. Other options are reusable cloths, sponges, baby wipes, napkins, towels, and washcloths.
 

Human health and hygiene

“Compared to many other items, toilet paper can’t really be replaced,” says Frank H. Farley, PhD, a professor of psychological studies in education at Temple University, who studies human motivation. “It is a unique consumer item that is perceived to be extremely necessary. In that way, it plays into that survivor mentality, that having it is necessary for survival.”

Being without it can truly seem like an existential threat.

New York City emergency planner Ira Tannenbaum advises families to assess their usage of essential household supplies like toilet paper (you can do so through this toilet paper calculator) and keep at least a 1-week supply on hand in case of emergency. New York City has posted recommendations to families for emergency planning, including the guidance to “avoid panic buying.”

Dr. Pike says she would stockpile a bit more, something that could be done gradually, before there’s a panic. She says that if people are tempted to buy more out of anxiety, they should remind themselves that shortages arise because of panicky purchasing.

“Leave some for other families – other people have children and partners and siblings just like us,” she says.

A version of this article first appeared on WebMD.com.

How did toilet paper become the unofficial symbol of anxiety during the pandemic? Empty store shelves are a stark reminder of how COVID-19 has taken a toll on people.

gmcoop/E+

At the beginning of the pandemic, stay-at-home orders drove people to buy large amounts of household goods, especially toilet paper. Demand grew to unforeseen heights in March 2020, with $1.45 billion in toilet paper sales in the 4-week period ending March 29, up 112% from the year before, according to IRI, a Chicago-based market research firm.

As the Delta variant drove a COVID-19 resurgence this summer, market research suggests that almost one in two Americans started stockpiling toilet paper again over fears that supply would run out. The higher demand causes ripples through the retail chain, and a growing number of stores are again facing challenges in stocking toilet paper.

Yet there is plenty for everyone if people don’t stockpile too much, according to paper industry market analyst Ronalds Gonzalez, PhD, an associate professor of conversion economics and sustainability at North Carolina State University, Raleigh.

“As long as people buy what they actually need and don’t get into a panic, there won’t be any issue with the supply of hygienic tissue,” he says, adding that “too much” would equate to stockpiling 6-8 months’ worth of toilet paper, as some people did early in the pandemic.

But retailers are worried that history will repeat itself. In late September 2021, warehouse retail giant Costco told Wall Street analysts that it decided to limit customer purchases of essential items like toilet paper and water. Another retailer, Sam’s Club, began limiting customer purchases of supplies like toilet paper at the end of July.

“We are wired to run with the herd,” says Bradley Klontz, PsyD, an associate professor of practice at Creighton University Heider College of Business, Omaha, N.E., who specializes in financial psychology.

“Quite literally, the last person to get to Costco doesn’t get the toilet paper, so when the herd is running in a certain direction, we feel a biological imperative to not be that last person. That fear of scarcity actually creates the experience of scarcity,” he explains.
 

The science behind the stockpile

People are collectively alerted by photos shared on social media showing store shelves stripped of toilet paper. Those images triggered consumers to rush out and buy bathroom tissue, even if they didn’t need it – and that herd behavior created toilet paper shortages.

Now, a year and half into the pandemic, people are hypervigilant to danger. Any hint of a possible toilet paper shortage can provoke anxiety and the desire to stockpile.

“It’s an adaptive response to having just gone through the experience” of seeing empty store shelves, says Dr. Klontz. He advises people to take a deep breath before buying extra toilet paper and then assess whether it is truly needed.

Deep in our brains is the limbic system, a group of structures that rules over emotions, motivation, reward, learning, memory, and the fight-or-flight response to stress and danger. When a person senses danger, the brain activates hormones to raise blood pressure and heart rate, increase blood flow, and boost the breath rate, making the body ready to fight or flee under threat.

Once everything settles, the body activates chemicals like dopamine that bring on positive feelings of well-being, rewarding that flight-or-fight response. In this way, the brain powerfully reinforces a key survival instinct.

This sequence of experiences and the brain chemistry behind them may explain why people panic-buy toilet paper.

“With toilet paper, my limbic system starts thinking about a perceived threat to safety,” says Julie Pike, PhD, a psychologist in Chapel Hill, N.C., who specializes in anxiety, hoarding, and posttraumatic stress disorder.

She notes that, in stockpiling toilet paper, “we avoid a perceived threat and then we are chemically rewarded” with dopamine. A storage closet full of toilet paper after a perceived threat of scarcity – no matter how unfounded – brings on that satisfied feeling.
 

When the market shifted

Paper producers make hygiene paper for two markets: the commercial (think: those big rolls of thin paper used in offices, schools, and restaurants) and the consumer (the soft paper you likely use at home). In the spring of 2020, the commercial market plummeted, and the consumer market skyrocketed.

Generally, the consumer toilet paper market is steady. The average American uses about 57 toilet sheets a day and about 50 pounds annually. Grocery stores and other retailers keep just enough toilet paper on hand to meet this steady demand, meaning panic buying at the start of the pandemic quickly depleted stocks. Paper makers had to change production to meet higher consumer demand and fewer commercial buyers.

By the end of the summer of 2020, toilet paper makers had adjusted for the market shift and caught up with demand, as consumers worked through their stockpiles of paper. But retail inventories remain lean because toilet paper doesn’t carry huge profit margins. For this reason, even healthy stocks remain sensitive to sudden shifts in consumer demand, Dr. Gonzalez says.

“If people buy more than they should, then they are just buying from other people,” creating an unnecessary scarcity of toilet paper, he says.
 

The supply chain

It is true that the supply chain is under unprecedented strain, leading to higher prices for many goods, says Katie Denis, vice president of research and industry narrative at the Consumer Brands Association, Washington, which represents toilet paper makers Georgia-Pacific and Procter & Gamble. Consumers should expect toilet paper to be available, but there may be fewer options for product sizes, she says.

Still, Dr. Gonzalez says consumers should not worry too much about the global supply chain affecting the domestic toilet paper supply. The raw material for toilet paper production is available domestically, and more than 97% of the supply on U.S. retailer shelves is made in the United States, he says.

In modern society, toilet paper is a primary link to civilization, health, and hygiene. While there is no easy substitute, alternatives do exist A bidet, for example, is a device that can spray water on the genital area. Other options are reusable cloths, sponges, baby wipes, napkins, towels, and washcloths.
 

Human health and hygiene

“Compared to many other items, toilet paper can’t really be replaced,” says Frank H. Farley, PhD, a professor of psychological studies in education at Temple University, who studies human motivation. “It is a unique consumer item that is perceived to be extremely necessary. In that way, it plays into that survivor mentality, that having it is necessary for survival.”

Being without it can truly seem like an existential threat.

New York City emergency planner Ira Tannenbaum advises families to assess their usage of essential household supplies like toilet paper (you can do so through this toilet paper calculator) and keep at least a 1-week supply on hand in case of emergency. New York City has posted recommendations to families for emergency planning, including the guidance to “avoid panic buying.”

Dr. Pike says she would stockpile a bit more, something that could be done gradually, before there’s a panic. She says that if people are tempted to buy more out of anxiety, they should remind themselves that shortages arise because of panicky purchasing.

“Leave some for other families – other people have children and partners and siblings just like us,” she says.

A version of this article first appeared on WebMD.com.

The U.S. Food and Drug Administration (FDA) has approved an expanded indication of the antiretroviral medication Biktarvy for younger children living with HIV. The new lower dose is approved for children weighing from at least 14 kg (30 pounds) to 25 kg (55 pounds) who are virologically suppressed or new to antiretroviral therapy.

“Children living with HIV are in need of effective and accessible formulations of antiretroviral therapy,” said Merdad Parsey, MD, PhD, chief medical officer of Gilead Sciences, the company that produces Biktarvy, in a press release. “The New Drug Application approval is an important step in fulfilling Gilead’s commitment to a goal of bringing pediatric formulations of Biktarvy to children living with HIV around the world,” he said.

Although advances in treatment for pregnant women with HIV have lowered the likelihood of perinatal HIV transmission, pediatric HIV remains a global public health challenge. In 2020, about 1.7 million children younger than 15 years were living with HIV worldwide; 850 children become infected every day.

The approval, announced October 18, expands the use of Biktarvy to younger children. The medication was originally approved in February 2018 for treatment-naive or virologically suppressed adults. In June 2019, the FDA approved updating of the label to include pediatric patients weighing at least 25 kg. This new lower dose of Biktarvy is for a three-drug combo containing bictegravir 30 mg, emtricitabine 120 mg, and tenofovir alafenamide 15 mg. It is given once a day in tablet form.

The most recent expanded indication was based on data from an open-label, single-arm study that included 22 virologically suppressed children living with HIV. After switching to Biktarvy, 91% of participants (20 of 22) remained virologically suppressed at 24 weeks. HIV-1 RNA was not collected for two patients because of «pandemic-related study disruption,» the press release said.

“As children living with HIV will be on therapy for the foreseeable future and from such a young age, there are a number of factors I weigh as a clinician when prescribing the right HIV treatment option to my pediatric patients,” said Carina Rodriguez, MD, the division chief of pediatric infectious diseases at the University of South Florida, who was one of the study investigators. “Finding an efficacious treatment option is paramount, but tolerability and safety are keys to ensuring treatment success. With this expanded approval, clinicians can add Biktarvy to their arsenal of options to help ensure these children maintain virologic suppression with a treatment option that makes sense for them.”

A version of this article first appeared on Medscape.com.

The U.S. Food and Drug Administration (FDA) has approved an expanded indication of the antiretroviral medication Biktarvy for younger children living with HIV. The new lower dose is approved for children weighing from at least 14 kg (30 pounds) to 25 kg (55 pounds) who are virologically suppressed or new to antiretroviral therapy.

“Children living with HIV are in need of effective and accessible formulations of antiretroviral therapy,” said Merdad Parsey, MD, PhD, chief medical officer of Gilead Sciences, the company that produces Biktarvy, in a press release. “The New Drug Application approval is an important step in fulfilling Gilead’s commitment to a goal of bringing pediatric formulations of Biktarvy to children living with HIV around the world,” he said.

Although advances in treatment for pregnant women with HIV have lowered the likelihood of perinatal HIV transmission, pediatric HIV remains a global public health challenge. In 2020, about 1.7 million children younger than 15 years were living with HIV worldwide; 850 children become infected every day.

The approval, announced October 18, expands the use of Biktarvy to younger children. The medication was originally approved in February 2018 for treatment-naive or virologically suppressed adults. In June 2019, the FDA approved updating of the label to include pediatric patients weighing at least 25 kg. This new lower dose of Biktarvy is for a three-drug combo containing bictegravir 30 mg, emtricitabine 120 mg, and tenofovir alafenamide 15 mg. It is given once a day in tablet form.

The most recent expanded indication was based on data from an open-label, single-arm study that included 22 virologically suppressed children living with HIV. After switching to Biktarvy, 91% of participants (20 of 22) remained virologically suppressed at 24 weeks. HIV-1 RNA was not collected for two patients because of «pandemic-related study disruption,» the press release said.

“As children living with HIV will be on therapy for the foreseeable future and from such a young age, there are a number of factors I weigh as a clinician when prescribing the right HIV treatment option to my pediatric patients,” said Carina Rodriguez, MD, the division chief of pediatric infectious diseases at the University of South Florida, who was one of the study investigators. “Finding an efficacious treatment option is paramount, but tolerability and safety are keys to ensuring treatment success. With this expanded approval, clinicians can add Biktarvy to their arsenal of options to help ensure these children maintain virologic suppression with a treatment option that makes sense for them.”

A version of this article first appeared on Medscape.com.

The U.S. Food and Drug Administration (FDA) has approved an expanded indication of the antiretroviral medication Biktarvy for younger children living with HIV. The new lower dose is approved for children weighing from at least 14 kg (30 pounds) to 25 kg (55 pounds) who are virologically suppressed or new to antiretroviral therapy.

“Children living with HIV are in need of effective and accessible formulations of antiretroviral therapy,” said Merdad Parsey, MD, PhD, chief medical officer of Gilead Sciences, the company that produces Biktarvy, in a press release. “The New Drug Application approval is an important step in fulfilling Gilead’s commitment to a goal of bringing pediatric formulations of Biktarvy to children living with HIV around the world,” he said.

Although advances in treatment for pregnant women with HIV have lowered the likelihood of perinatal HIV transmission, pediatric HIV remains a global public health challenge. In 2020, about 1.7 million children younger than 15 years were living with HIV worldwide; 850 children become infected every day.

The approval, announced October 18, expands the use of Biktarvy to younger children. The medication was originally approved in February 2018 for treatment-naive or virologically suppressed adults. In June 2019, the FDA approved updating of the label to include pediatric patients weighing at least 25 kg. This new lower dose of Biktarvy is for a three-drug combo containing bictegravir 30 mg, emtricitabine 120 mg, and tenofovir alafenamide 15 mg. It is given once a day in tablet form.

The most recent expanded indication was based on data from an open-label, single-arm study that included 22 virologically suppressed children living with HIV. After switching to Biktarvy, 91% of participants (20 of 22) remained virologically suppressed at 24 weeks. HIV-1 RNA was not collected for two patients because of «pandemic-related study disruption,» the press release said.

“As children living with HIV will be on therapy for the foreseeable future and from such a young age, there are a number of factors I weigh as a clinician when prescribing the right HIV treatment option to my pediatric patients,” said Carina Rodriguez, MD, the division chief of pediatric infectious diseases at the University of South Florida, who was one of the study investigators. “Finding an efficacious treatment option is paramount, but tolerability and safety are keys to ensuring treatment success. With this expanded approval, clinicians can add Biktarvy to their arsenal of options to help ensure these children maintain virologic suppression with a treatment option that makes sense for them.”

A version of this article first appeared on Medscape.com.

States can preorder COVID-19 vaccine doses for younger children this week as they begin to set up vaccination campaigns for ages 5-11.

Vaccine advisory groups for the FDA and CDC are scheduled to discuss and approve the Pfizer shot for kids in the next three weeks. To help states and cities prepare for the rollout, the CDC issued guidance on how to set up expanded vaccination programs.

Immunization program managers can begin ordering doses on Wednesday, according to the guidance. The vials won’t be delivered until the FDA and CDC authorize the shot, but registering now will help federal officials ship doses quickly once they’re available.

Pharmacies in every state will be able to give COVID-19 shots to children, but they can only use doses that are prepared specifically for children. Ages 5-11 will need a 10-microgram dose, which is one-third of the dose administered to ages 12 and older. The guidance warns that doctors should not try to split up or fraction the adult doses.

The CDC guidance also recommends that pediatricians and family practice doctors should serve as primary places to give shots to kids. The document mentions other options, such as vaccination clinics at schools, but doesn’t endorse them as the first choice for vaccinating kids.

The CDC hasn’t yet addressed questions around whether kids should be required to get vaccinated to attend school. The decision will likely be left to state and city officials.

Federal health officials aren’t yet sure how many parents and guardians will seek shots for their younger kids right away, the AP reported. Demand may be high at first for some families, but it may not be as high as when shots first became available for adults, Marcus Plescia, MD, chief medical officer of the Association of State and Territorial Health Officials, told The Associated Press.

“We’re going to have potentially a very busy, and perhaps modestly chaotic time,” he said.

When vaccines were first authorized for adults, hospitals and pharmacies received priority for ordering shots. Some doctors felt left out. This time, however, the CDC has said that pediatricians will receive higher priority and be able to receive shipments quickly.

As the vaccine rollout begins, health officials should consider logistical concerns to address racial and economic disparities for younger kids, Richard Besser, MD, president and CEO of the Robert Wood Johnson Foundation and a former acting director of the CDC, told the AP.

If parents or guardians can’t leave work to take their kids to a pharmacy or doctor’s office, for instance, their kids may not receive a shot quickly – or at all.

“It’s really important that we recognize the barriers to vaccinations,” he said.

A version of this article first appeared on WebMD.com.

States can preorder COVID-19 vaccine doses for younger children this week as they begin to set up vaccination campaigns for ages 5-11.

Vaccine advisory groups for the FDA and CDC are scheduled to discuss and approve the Pfizer shot for kids in the next three weeks. To help states and cities prepare for the rollout, the CDC issued guidance on how to set up expanded vaccination programs.

Immunization program managers can begin ordering doses on Wednesday, according to the guidance. The vials won’t be delivered until the FDA and CDC authorize the shot, but registering now will help federal officials ship doses quickly once they’re available.

Pharmacies in every state will be able to give COVID-19 shots to children, but they can only use doses that are prepared specifically for children. Ages 5-11 will need a 10-microgram dose, which is one-third of the dose administered to ages 12 and older. The guidance warns that doctors should not try to split up or fraction the adult doses.

The CDC guidance also recommends that pediatricians and family practice doctors should serve as primary places to give shots to kids. The document mentions other options, such as vaccination clinics at schools, but doesn’t endorse them as the first choice for vaccinating kids.

The CDC hasn’t yet addressed questions around whether kids should be required to get vaccinated to attend school. The decision will likely be left to state and city officials.

Federal health officials aren’t yet sure how many parents and guardians will seek shots for their younger kids right away, the AP reported. Demand may be high at first for some families, but it may not be as high as when shots first became available for adults, Marcus Plescia, MD, chief medical officer of the Association of State and Territorial Health Officials, told The Associated Press.

“We’re going to have potentially a very busy, and perhaps modestly chaotic time,” he said.

When vaccines were first authorized for adults, hospitals and pharmacies received priority for ordering shots. Some doctors felt left out. This time, however, the CDC has said that pediatricians will receive higher priority and be able to receive shipments quickly.

As the vaccine rollout begins, health officials should consider logistical concerns to address racial and economic disparities for younger kids, Richard Besser, MD, president and CEO of the Robert Wood Johnson Foundation and a former acting director of the CDC, told the AP.

If parents or guardians can’t leave work to take their kids to a pharmacy or doctor’s office, for instance, their kids may not receive a shot quickly – or at all.

“It’s really important that we recognize the barriers to vaccinations,” he said.

A version of this article first appeared on WebMD.com.

States can preorder COVID-19 vaccine doses for younger children this week as they begin to set up vaccination campaigns for ages 5-11.

Vaccine advisory groups for the FDA and CDC are scheduled to discuss and approve the Pfizer shot for kids in the next three weeks. To help states and cities prepare for the rollout, the CDC issued guidance on how to set up expanded vaccination programs.

Immunization program managers can begin ordering doses on Wednesday, according to the guidance. The vials won’t be delivered until the FDA and CDC authorize the shot, but registering now will help federal officials ship doses quickly once they’re available.

Pharmacies in every state will be able to give COVID-19 shots to children, but they can only use doses that are prepared specifically for children. Ages 5-11 will need a 10-microgram dose, which is one-third of the dose administered to ages 12 and older. The guidance warns that doctors should not try to split up or fraction the adult doses.

The CDC guidance also recommends that pediatricians and family practice doctors should serve as primary places to give shots to kids. The document mentions other options, such as vaccination clinics at schools, but doesn’t endorse them as the first choice for vaccinating kids.

The CDC hasn’t yet addressed questions around whether kids should be required to get vaccinated to attend school. The decision will likely be left to state and city officials.

Federal health officials aren’t yet sure how many parents and guardians will seek shots for their younger kids right away, the AP reported. Demand may be high at first for some families, but it may not be as high as when shots first became available for adults, Marcus Plescia, MD, chief medical officer of the Association of State and Territorial Health Officials, told The Associated Press.

“We’re going to have potentially a very busy, and perhaps modestly chaotic time,” he said.

When vaccines were first authorized for adults, hospitals and pharmacies received priority for ordering shots. Some doctors felt left out. This time, however, the CDC has said that pediatricians will receive higher priority and be able to receive shipments quickly.

As the vaccine rollout begins, health officials should consider logistical concerns to address racial and economic disparities for younger kids, Richard Besser, MD, president and CEO of the Robert Wood Johnson Foundation and a former acting director of the CDC, told the AP.

If parents or guardians can’t leave work to take their kids to a pharmacy or doctor’s office, for instance, their kids may not receive a shot quickly – or at all.

“It’s really important that we recognize the barriers to vaccinations,” he said.

A version of this article first appeared on WebMD.com.

The Food and Drug Administration has approved the Flucelvax quadrivalent vaccine for use in children aged 6 months and older, according to a statement from manufacturer Seqirus.

“This approval officially allows all eligible Americans to receive a cell-based influenza vaccine, increasing the potential for greater vaccine effectiveness,” according to the company.

The Centers for Disease Control and Prevention currently recommends annual influenza vaccination for all individuals aged 6 months and older without contraindications.

Flucelvax is manufactured using a cell-based process that yields a more precise match to the WHO-selected influenza strains for a given year. This process avoids the variation associated with traditional egg-based vaccines, and offers the potential for greater vaccine effectiveness, according to the company.

The approval was based in part on data from a phase 3 randomized, controlled noninferiority study of children aged 6-47 months. The data are the first for a cell-based flu vaccine in this age group, and were presented at the Pediatric Academic Societies meeting in 2021.

In the immunogenicity study of children aged 6 months through 3 years, described in the package insert, 1,597 children received Flucelvax quadrivalent and 805 received a control quadrivalent vaccine. After 28 days, Flucelvax showed noninferiority to the control quadrivalent against four influenza strains.

The most common side effects with Flucelvax quadrivalent vaccine overall are pain, redness, swelling, or a hardened area at the injection site, headache, low energy, muscle aches, and malaise. Additional side effects reported in children include tenderness or bruising at the injection site, sleepiness, diarrhea, changes in eating habits, and irritability. The vaccine is contraindicated for individuals with allergies to any of its ingredients.

Additional efficacy data on Flucelvax for children and adolescents aged 2-18 years were recently published in The New England Journal of Medicine.

Full prescribing information for Flucelvax is available here.

The FDA approval letter is available here.pdnews@mdedge.com

The Food and Drug Administration has approved the Flucelvax quadrivalent vaccine for use in children aged 6 months and older, according to a statement from manufacturer Seqirus.

“This approval officially allows all eligible Americans to receive a cell-based influenza vaccine, increasing the potential for greater vaccine effectiveness,” according to the company.

The Centers for Disease Control and Prevention currently recommends annual influenza vaccination for all individuals aged 6 months and older without contraindications.

Flucelvax is manufactured using a cell-based process that yields a more precise match to the WHO-selected influenza strains for a given year. This process avoids the variation associated with traditional egg-based vaccines, and offers the potential for greater vaccine effectiveness, according to the company.

The approval was based in part on data from a phase 3 randomized, controlled noninferiority study of children aged 6-47 months. The data are the first for a cell-based flu vaccine in this age group, and were presented at the Pediatric Academic Societies meeting in 2021.

In the immunogenicity study of children aged 6 months through 3 years, described in the package insert, 1,597 children received Flucelvax quadrivalent and 805 received a control quadrivalent vaccine. After 28 days, Flucelvax showed noninferiority to the control quadrivalent against four influenza strains.

The most common side effects with Flucelvax quadrivalent vaccine overall are pain, redness, swelling, or a hardened area at the injection site, headache, low energy, muscle aches, and malaise. Additional side effects reported in children include tenderness or bruising at the injection site, sleepiness, diarrhea, changes in eating habits, and irritability. The vaccine is contraindicated for individuals with allergies to any of its ingredients.

Additional efficacy data on Flucelvax for children and adolescents aged 2-18 years were recently published in The New England Journal of Medicine.

Full prescribing information for Flucelvax is available here.

The FDA approval letter is available here.pdnews@mdedge.com

The Food and Drug Administration has approved the Flucelvax quadrivalent vaccine for use in children aged 6 months and older, according to a statement from manufacturer Seqirus.

“This approval officially allows all eligible Americans to receive a cell-based influenza vaccine, increasing the potential for greater vaccine effectiveness,” according to the company.

The Centers for Disease Control and Prevention currently recommends annual influenza vaccination for all individuals aged 6 months and older without contraindications.

Flucelvax is manufactured using a cell-based process that yields a more precise match to the WHO-selected influenza strains for a given year. This process avoids the variation associated with traditional egg-based vaccines, and offers the potential for greater vaccine effectiveness, according to the company.

The approval was based in part on data from a phase 3 randomized, controlled noninferiority study of children aged 6-47 months. The data are the first for a cell-based flu vaccine in this age group, and were presented at the Pediatric Academic Societies meeting in 2021.

In the immunogenicity study of children aged 6 months through 3 years, described in the package insert, 1,597 children received Flucelvax quadrivalent and 805 received a control quadrivalent vaccine. After 28 days, Flucelvax showed noninferiority to the control quadrivalent against four influenza strains.

The most common side effects with Flucelvax quadrivalent vaccine overall are pain, redness, swelling, or a hardened area at the injection site, headache, low energy, muscle aches, and malaise. Additional side effects reported in children include tenderness or bruising at the injection site, sleepiness, diarrhea, changes in eating habits, and irritability. The vaccine is contraindicated for individuals with allergies to any of its ingredients.

Additional efficacy data on Flucelvax for children and adolescents aged 2-18 years were recently published in The New England Journal of Medicine.

Full prescribing information for Flucelvax is available here.

The FDA approval letter is available here.pdnews@mdedge.com

The melatonin precursor tryptophan, an amino acid essential in the human diet, has been shown to display antioxidant effects.¹ FICZ (also known as 6-formylindolo[3,2-b]carbazole) is a photoproduct of tryptophan that is engendered by exposure to UVB.² This column discusses the beneficial and detrimental influence of FICZ in skin health.

Antioxidant activity

In 2005, Trommer and Neubert devised a skin lipid model system to screen 47 various compounds (drugs, plant extracts, other plant constituents, and polysaccharides) for topical antioxidative activity in response to UV-induced lipid peroxidation. Among the drugs evaluated, they observed that tryptophan exerted antioxidant effects.³

Wound healing potential

A murine study by Bandeira et al. in 2015 revealed that tryptophan-induced mitigation of the inflammatory response and indoleamine 2, 3-dioxygenase expression may have enhanced skin wound healing in mice who were repeatedly stressed.⁴

Antifibrotic activity

In 2018, Murai et al. endeavored to clarify the role of FICZ in regulating the expression of matrix metalloproteinases and tissue inhibitors of metalloproteinases in normal human dermal fibroblasts. They found that FICZ assists in imparting UV-mediated antifibrotic effects through the AHR/MEK/ERK signal pathway in normal human dermal fibroblasts and, thus, shows promise as a therapeutic option for scleroderma.⁵

Cutaneous leishmaniasis

In 2019, Rodrigues et al. conducted a quantitative analysis of the relative expression of 170 genes involved in various biological processes in the skin biopsies from patients with cutaneous leishmaniasis caused by infection with either Leishmania major or L. tropica. They identified tryptophan-2,3-deoxygenase as a restriction factor for the disorder.⁶

Photosensitizing activity

Park et al. showed that FICZ, a tryptophan photoproduct and endogenous high-affinity aryl hydrocarbon receptor (AhR) agonist, exhibits nanomolar photodynamic activity as a UVA photosensitizer in epidermal keratinocytes and, thus, is possibly operative in human skin.⁷ Syed and Mukhtar add that FICZ is effective at nanomolar concentrations and that future research may elucidate its applicability against UV-induced adverse effects and inflammatory skin conditions.⁸

FICZ, oxidative stress, and cancer promotion

FICZ is known to display detrimental, as well as beneficial, influences in skin. The tryptophan photoproduct, comparable to UVB, ligates AhR, generates reactive oxygen species, and strongly photosensitizes for UVA. As Furue et al. note, FICZ upregulates the expression of terminal differentiation molecules (i.e., filaggrin and loricrin via AhR), and its application has been shown to suppress cutaneous inflammation in a psoriasis and dermatitis mouse model.²

In 2016, Reid et al. reported that the protein photodamage brought about by endogenous photosensitizers such as tryptophan tyrosine residues can contribute to the deleterious impact of UVA on human skin.⁹

In 2018, Tanaka et al. showed that FICZ imparts a cascade of events tantamount in some cases to UVB, as it promoted the synthesis of proinflammatory cytokines such as interleukin (IL)-1 alpha, IL-1 beta, and IL-6 and boosted reactive oxygen species generation in human HaCaT keratinocytes in an AhR-dependent fashion. They concluded that observing FICZ activity contributes to the understanding of how UVB damages organisms.¹⁰

That same year, Murai et al. assessed the effects of FICZ on TGF-beta-mediated ACTA2 and collagen I expression in normal human dermal fibroblasts. They determined that it may act as a key chromophore and one approach to mitigating the effects of photoaging may be to downregulate FICZ signaling.¹¹

A year earlier, Brem et al. showed that the combined effect of FICZ and UVA engendered significant protein damage in HaCaT human keratinocytes, with the oxidation yielded from the combination of FICZ and UVA blocking the removal of potentially mutagenic UVB-induced DNA photolesions by nucleotide excision repair. The researchers concluded that the development of FICZ may raise the risk of incurring skin cancer resulting from sun exposure via the promotion of photochemical impairment of the nucleotide excision repair proteome, which in turn inhibits the removal of UVB-induced DNA lesions.¹²

Conclusion

Tryptophan, an essential amino acid in the human diet, is known to exhibit antioxidant activity. It is also a precursor to the hormone melatonin, which plays an important role in human health. However, the tryptophan photoproduct FICZ, which results from UVB exposure, presents as a complicated substance, conferring healthy and harmful effects. Much more research is necessary to determine how best to harness and direct the useful activities of tryptophan and FICZ without incurring damaging effects. Nanotechnology may be one useful avenue of investigation for this purpose.

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur who practices in Miami. She founded the Cosmetic Dermatology Center at the University of Miami in 1997. Dr. Baumann has written two textbooks and a New York Times Best Sellers book for consumers. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Revance, Evolus, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a company that independently tests skin care products and makes recommendations to physicians on which skin care technologies are best. Write to her at dermnews@mdedge.com.

References

1. Trommer H et al. J Pharm Pharmacol. 2003 Oct;55(10):1379-88.

2. Furue M et al. G Ital Dermatol Venereol. 2019 Feb;154(1):37-41.

3. Trommer H and Neubert RH. J Pharm Pharm Sci. 2005 Sep 15;8(3):494-506.

4. Bandeira LG et al. PLoS One. 2015 Jun 9:10(6):e0128439.

5. Murai M et al. J Dermatol Sci. 2018 Jul;91(1):97-103.

6. Rodrigues V et al. Front Cell Infect Microbiol. 2019 Oct 4;9:338. eCollection 2019.

7. Park SL et al. J Invest Dermatol. 2015 Jun;135(6):1649-58.

8. Syed DN and Mukhtar H. J Invest Dermatol. 2015 Jun;135(6):1478-81.

9. Reid LO et al. Biochemistry. 2016 Aug 30;55(34):4777-86.

10. Tanaka Y et al. Oxid Med Cell Longev. 2018 Nov 25;2018:9298052.

11. Murai M et al. J Dermatol Sci. 2018 Jan;89(1):19-26.

12. Brem R et al. Sci Rep. 2017 Jun 27;7(1):4310.

The melatonin precursor tryptophan, an amino acid essential in the human diet, has been shown to display antioxidant effects.¹ FICZ (also known as 6-formylindolo[3,2-b]carbazole) is a photoproduct of tryptophan that is engendered by exposure to UVB.² This column discusses the beneficial and detrimental influence of FICZ in skin health.

Antioxidant activity

In 2005, Trommer and Neubert devised a skin lipid model system to screen 47 various compounds (drugs, plant extracts, other plant constituents, and polysaccharides) for topical antioxidative activity in response to UV-induced lipid peroxidation. Among the drugs evaluated, they observed that tryptophan exerted antioxidant effects.³

Wound healing potential

A murine study by Bandeira et al. in 2015 revealed that tryptophan-induced mitigation of the inflammatory response and indoleamine 2, 3-dioxygenase expression may have enhanced skin wound healing in mice who were repeatedly stressed.⁴

Antifibrotic activity

In 2018, Murai et al. endeavored to clarify the role of FICZ in regulating the expression of matrix metalloproteinases and tissue inhibitors of metalloproteinases in normal human dermal fibroblasts. They found that FICZ assists in imparting UV-mediated antifibrotic effects through the AHR/MEK/ERK signal pathway in normal human dermal fibroblasts and, thus, shows promise as a therapeutic option for scleroderma.⁵

Cutaneous leishmaniasis

In 2019, Rodrigues et al. conducted a quantitative analysis of the relative expression of 170 genes involved in various biological processes in the skin biopsies from patients with cutaneous leishmaniasis caused by infection with either Leishmania major or L. tropica. They identified tryptophan-2,3-deoxygenase as a restriction factor for the disorder.⁶

Photosensitizing activity

Park et al. showed that FICZ, a tryptophan photoproduct and endogenous high-affinity aryl hydrocarbon receptor (AhR) agonist, exhibits nanomolar photodynamic activity as a UVA photosensitizer in epidermal keratinocytes and, thus, is possibly operative in human skin.⁷ Syed and Mukhtar add that FICZ is effective at nanomolar concentrations and that future research may elucidate its applicability against UV-induced adverse effects and inflammatory skin conditions.⁸

FICZ, oxidative stress, and cancer promotion

FICZ is known to display detrimental, as well as beneficial, influences in skin. The tryptophan photoproduct, comparable to UVB, ligates AhR, generates reactive oxygen species, and strongly photosensitizes for UVA. As Furue et al. note, FICZ upregulates the expression of terminal differentiation molecules (i.e., filaggrin and loricrin via AhR), and its application has been shown to suppress cutaneous inflammation in a psoriasis and dermatitis mouse model.²

In 2016, Reid et al. reported that the protein photodamage brought about by endogenous photosensitizers such as tryptophan tyrosine residues can contribute to the deleterious impact of UVA on human skin.⁹

In 2018, Tanaka et al. showed that FICZ imparts a cascade of events tantamount in some cases to UVB, as it promoted the synthesis of proinflammatory cytokines such as interleukin (IL)-1 alpha, IL-1 beta, and IL-6 and boosted reactive oxygen species generation in human HaCaT keratinocytes in an AhR-dependent fashion. They concluded that observing FICZ activity contributes to the understanding of how UVB damages organisms.¹⁰

That same year, Murai et al. assessed the effects of FICZ on TGF-beta-mediated ACTA2 and collagen I expression in normal human dermal fibroblasts. They determined that it may act as a key chromophore and one approach to mitigating the effects of photoaging may be to downregulate FICZ signaling.¹¹

A year earlier, Brem et al. showed that the combined effect of FICZ and UVA engendered significant protein damage in HaCaT human keratinocytes, with the oxidation yielded from the combination of FICZ and UVA blocking the removal of potentially mutagenic UVB-induced DNA photolesions by nucleotide excision repair. The researchers concluded that the development of FICZ may raise the risk of incurring skin cancer resulting from sun exposure via the promotion of photochemical impairment of the nucleotide excision repair proteome, which in turn inhibits the removal of UVB-induced DNA lesions.¹²

Conclusion

Tryptophan, an essential amino acid in the human diet, is known to exhibit antioxidant activity. It is also a precursor to the hormone melatonin, which plays an important role in human health. However, the tryptophan photoproduct FICZ, which results from UVB exposure, presents as a complicated substance, conferring healthy and harmful effects. Much more research is necessary to determine how best to harness and direct the useful activities of tryptophan and FICZ without incurring damaging effects. Nanotechnology may be one useful avenue of investigation for this purpose.

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur who practices in Miami. She founded the Cosmetic Dermatology Center at the University of Miami in 1997. Dr. Baumann has written two textbooks and a New York Times Best Sellers book for consumers. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Revance, Evolus, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a company that independently tests skin care products and makes recommendations to physicians on which skin care technologies are best. Write to her at dermnews@mdedge.com.

References

1. Trommer H et al. J Pharm Pharmacol. 2003 Oct;55(10):1379-88.

2. Furue M et al. G Ital Dermatol Venereol. 2019 Feb;154(1):37-41.

3. Trommer H and Neubert RH. J Pharm Pharm Sci. 2005 Sep 15;8(3):494-506.

4. Bandeira LG et al. PLoS One. 2015 Jun 9:10(6):e0128439.

5. Murai M et al. J Dermatol Sci. 2018 Jul;91(1):97-103.

6. Rodrigues V et al. Front Cell Infect Microbiol. 2019 Oct 4;9:338. eCollection 2019.

7. Park SL et al. J Invest Dermatol. 2015 Jun;135(6):1649-58.

8. Syed DN and Mukhtar H. J Invest Dermatol. 2015 Jun;135(6):1478-81.

9. Reid LO et al. Biochemistry. 2016 Aug 30;55(34):4777-86.

10. Tanaka Y et al. Oxid Med Cell Longev. 2018 Nov 25;2018:9298052.

11. Murai M et al. J Dermatol Sci. 2018 Jan;89(1):19-26.

12. Brem R et al. Sci Rep. 2017 Jun 27;7(1):4310.

The melatonin precursor tryptophan, an amino acid essential in the human diet, has been shown to display antioxidant effects.¹ FICZ (also known as 6-formylindolo[3,2-b]carbazole) is a photoproduct of tryptophan that is engendered by exposure to UVB.² This column discusses the beneficial and detrimental influence of FICZ in skin health.

Antioxidant activity

In 2005, Trommer and Neubert devised a skin lipid model system to screen 47 various compounds (drugs, plant extracts, other plant constituents, and polysaccharides) for topical antioxidative activity in response to UV-induced lipid peroxidation. Among the drugs evaluated, they observed that tryptophan exerted antioxidant effects.³

Wound healing potential

A murine study by Bandeira et al. in 2015 revealed that tryptophan-induced mitigation of the inflammatory response and indoleamine 2, 3-dioxygenase expression may have enhanced skin wound healing in mice who were repeatedly stressed.⁴

Antifibrotic activity

In 2018, Murai et al. endeavored to clarify the role of FICZ in regulating the expression of matrix metalloproteinases and tissue inhibitors of metalloproteinases in normal human dermal fibroblasts. They found that FICZ assists in imparting UV-mediated antifibrotic effects through the AHR/MEK/ERK signal pathway in normal human dermal fibroblasts and, thus, shows promise as a therapeutic option for scleroderma.⁵

Cutaneous leishmaniasis

In 2019, Rodrigues et al. conducted a quantitative analysis of the relative expression of 170 genes involved in various biological processes in the skin biopsies from patients with cutaneous leishmaniasis caused by infection with either Leishmania major or L. tropica. They identified tryptophan-2,3-deoxygenase as a restriction factor for the disorder.⁶

Photosensitizing activity

Park et al. showed that FICZ, a tryptophan photoproduct and endogenous high-affinity aryl hydrocarbon receptor (AhR) agonist, exhibits nanomolar photodynamic activity as a UVA photosensitizer in epidermal keratinocytes and, thus, is possibly operative in human skin.⁷ Syed and Mukhtar add that FICZ is effective at nanomolar concentrations and that future research may elucidate its applicability against UV-induced adverse effects and inflammatory skin conditions.⁸

FICZ, oxidative stress, and cancer promotion

FICZ is known to display detrimental, as well as beneficial, influences in skin. The tryptophan photoproduct, comparable to UVB, ligates AhR, generates reactive oxygen species, and strongly photosensitizes for UVA. As Furue et al. note, FICZ upregulates the expression of terminal differentiation molecules (i.e., filaggrin and loricrin via AhR), and its application has been shown to suppress cutaneous inflammation in a psoriasis and dermatitis mouse model.²

In 2016, Reid et al. reported that the protein photodamage brought about by endogenous photosensitizers such as tryptophan tyrosine residues can contribute to the deleterious impact of UVA on human skin.⁹

In 2018, Tanaka et al. showed that FICZ imparts a cascade of events tantamount in some cases to UVB, as it promoted the synthesis of proinflammatory cytokines such as interleukin (IL)-1 alpha, IL-1 beta, and IL-6 and boosted reactive oxygen species generation in human HaCaT keratinocytes in an AhR-dependent fashion. They concluded that observing FICZ activity contributes to the understanding of how UVB damages organisms.¹⁰

That same year, Murai et al. assessed the effects of FICZ on TGF-beta-mediated ACTA2 and collagen I expression in normal human dermal fibroblasts. They determined that it may act as a key chromophore and one approach to mitigating the effects of photoaging may be to downregulate FICZ signaling.¹¹

A year earlier, Brem et al. showed that the combined effect of FICZ and UVA engendered significant protein damage in HaCaT human keratinocytes, with the oxidation yielded from the combination of FICZ and UVA blocking the removal of potentially mutagenic UVB-induced DNA photolesions by nucleotide excision repair. The researchers concluded that the development of FICZ may raise the risk of incurring skin cancer resulting from sun exposure via the promotion of photochemical impairment of the nucleotide excision repair proteome, which in turn inhibits the removal of UVB-induced DNA lesions.¹²

Conclusion

Tryptophan, an essential amino acid in the human diet, is known to exhibit antioxidant activity. It is also a precursor to the hormone melatonin, which plays an important role in human health. However, the tryptophan photoproduct FICZ, which results from UVB exposure, presents as a complicated substance, conferring healthy and harmful effects. Much more research is necessary to determine how best to harness and direct the useful activities of tryptophan and FICZ without incurring damaging effects. Nanotechnology may be one useful avenue of investigation for this purpose.

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur who practices in Miami. She founded the Cosmetic Dermatology Center at the University of Miami in 1997. Dr. Baumann has written two textbooks and a New York Times Best Sellers book for consumers. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Revance, Evolus, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a company that independently tests skin care products and makes recommendations to physicians on which skin care technologies are best. Write to her at dermnews@mdedge.com.

References

1. Trommer H et al. J Pharm Pharmacol. 2003 Oct;55(10):1379-88.

2. Furue M et al. G Ital Dermatol Venereol. 2019 Feb;154(1):37-41.

3. Trommer H and Neubert RH. J Pharm Pharm Sci. 2005 Sep 15;8(3):494-506.

4. Bandeira LG et al. PLoS One. 2015 Jun 9:10(6):e0128439.

5. Murai M et al. J Dermatol Sci. 2018 Jul;91(1):97-103.

6. Rodrigues V et al. Front Cell Infect Microbiol. 2019 Oct 4;9:338. eCollection 2019.

7. Park SL et al. J Invest Dermatol. 2015 Jun;135(6):1649-58.

8. Syed DN and Mukhtar H. J Invest Dermatol. 2015 Jun;135(6):1478-81.

9. Reid LO et al. Biochemistry. 2016 Aug 30;55(34):4777-86.

10. Tanaka Y et al. Oxid Med Cell Longev. 2018 Nov 25;2018:9298052.

11. Murai M et al. J Dermatol Sci. 2018 Jan;89(1):19-26.

12. Brem R et al. Sci Rep. 2017 Jun 27;7(1):4310.

Risk for Alzheimer’s disease (AD) and susceptibility to severe COVID-19 share a common genetic mechanism involved in the immune response to viruses, investigators report. The findings could lead to new treatment targets to slow progression and severity of both diseases.

Investigators found that a single genetic variant in the oligoadenylate synthetase 1 (OAS1) gene increases the risk for AD and that related variants in the same gene increase the likelihood of severe COVID-19 outcomes.

“These findings may allow us to identify new drug targets to slow progression of both diseases and reduce their severity,” Dervis Salih, PhD, senior research associate, UK Dementia Research Institute, University College London, said in an interview.

“Our work also suggests new approaches to treat both diseases with the same drugs,” Dr. Salih added.

The study was published online Oct. 7 in Brain.
 

Shared genetic network

The OAS1 gene is expressed in microglia, a type of immune cell that makes up around 10% of all cells in the brain.

In earlier work, investigators found evidence suggesting a link between the OAS1 gene and AD, but the function of the gene in microglia was unknown.

To further investigate the gene’s link to AD, they sequenced genetic data from 2,547 people – half with AD, and half without.

The genotyping analysis confirmed that the single-nucleotide polymorphism (SNP) rs1131454 within OAS1 is significantly associated with AD.

Given that the same OAS1 locus has recently been linked with severe COVID-19 outcomes, the researchers investigated four variants on the OAS1 gene.

Results indicate that SNPs within OAS1 associated with AD also show linkage to SNP variants associated with critical illness in COVID-19.

The rs1131454 (risk allele A) and rs4766676 (risk allele T) are associated with AD, and rs10735079 (risk allele A) and rs6489867 (risk allele T) are associated with critical illness with COVID-19, the investigators reported. All of these risk alleles dampen expression of OAS1.

“This study also provides strong new evidence that interferon signaling by the innate immune system plays a substantial role in the progression of Alzheimer’s,” said Dr. Salih.

“Identifying this shared genetic network in innate immune cells will allow us with future work to identify new biomarkers to track disease progression and also predict disease risk better for both disorders,” he added.
 

‘Fascinating’ link

In a statement from the UK nonprofit organization, Science Media Center, Kenneth Baillie, MBChB, with the University of Edinburgh, said this study builds on a discovery he and his colleagues made last year that OAS1 variants are associated with severe COVID-19.

“In the ISARIC4C study, we recently found that this is probably due to a change in the way cell membranes detect viruses, but this mechanism doesn’t explain the fascinating association with Alzheimer’s disease reported in this new work,” Dr. Baillie said.

“It is often the case that the same gene can have different roles in different parts of the body. Importantly, it doesn’t mean that having COVID-19 has any effect on your risk of Alzheimer’s,” he added.

Also weighing in on the new study, Jonathan Schott, MD, professor of neurology, University College London, noted that dementia is the “main preexisting health condition associated with COVID-19 mortality, accounting for about one in four deaths from COVID-19 between March and June 2020.

“While some of this excessive mortality may relate to people with dementia being overrepresented in care homes, which were particularly hard hit by the pandemic, or due to general increased vulnerability to infections, there have been questions as to whether there are common factors that might increase susceptibility both to developing dementia and to dying from COVID-19,” Dr. Schott explained.

This “elegant paper” provides evidence for the latter, “suggesting a common genetic mechanism both for Alzheimer’s disease and for severe COVID-19 infection,” Dr. Schott said.

“The identification of a genetic risk factor and elucidation of inflammatory pathways through which it may increase risk has important implications for our understanding of both diseases, with potential implications for novel treatments,” he added.

The study was funded by the UK Dementia Research Institute. The authors have disclosed no relevant financial relationships. Dr. Schott serves as chief medical officer for Alzheimer’s Research UK and is clinical adviser to the UK Dementia Research Institute. Dr. Baillie has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Risk for Alzheimer’s disease (AD) and susceptibility to severe COVID-19 share a common genetic mechanism involved in the immune response to viruses, investigators report. The findings could lead to new treatment targets to slow progression and severity of both diseases.

Investigators found that a single genetic variant in the oligoadenylate synthetase 1 (OAS1) gene increases the risk for AD and that related variants in the same gene increase the likelihood of severe COVID-19 outcomes.

“These findings may allow us to identify new drug targets to slow progression of both diseases and reduce their severity,” Dervis Salih, PhD, senior research associate, UK Dementia Research Institute, University College London, said in an interview.

“Our work also suggests new approaches to treat both diseases with the same drugs,” Dr. Salih added.

The study was published online Oct. 7 in Brain.
 

Shared genetic network

The OAS1 gene is expressed in microglia, a type of immune cell that makes up around 10% of all cells in the brain.

In earlier work, investigators found evidence suggesting a link between the OAS1 gene and AD, but the function of the gene in microglia was unknown.

To further investigate the gene’s link to AD, they sequenced genetic data from 2,547 people – half with AD, and half without.

The genotyping analysis confirmed that the single-nucleotide polymorphism (SNP) rs1131454 within OAS1 is significantly associated with AD.

Given that the same OAS1 locus has recently been linked with severe COVID-19 outcomes, the researchers investigated four variants on the OAS1 gene.

Results indicate that SNPs within OAS1 associated with AD also show linkage to SNP variants associated with critical illness in COVID-19.

The rs1131454 (risk allele A) and rs4766676 (risk allele T) are associated with AD, and rs10735079 (risk allele A) and rs6489867 (risk allele T) are associated with critical illness with COVID-19, the investigators reported. All of these risk alleles dampen expression of OAS1.

“This study also provides strong new evidence that interferon signaling by the innate immune system plays a substantial role in the progression of Alzheimer’s,” said Dr. Salih.

“Identifying this shared genetic network in innate immune cells will allow us with future work to identify new biomarkers to track disease progression and also predict disease risk better for both disorders,” he added.
 

‘Fascinating’ link

In a statement from the UK nonprofit organization, Science Media Center, Kenneth Baillie, MBChB, with the University of Edinburgh, said this study builds on a discovery he and his colleagues made last year that OAS1 variants are associated with severe COVID-19.

“In the ISARIC4C study, we recently found that this is probably due to a change in the way cell membranes detect viruses, but this mechanism doesn’t explain the fascinating association with Alzheimer’s disease reported in this new work,” Dr. Baillie said.

“It is often the case that the same gene can have different roles in different parts of the body. Importantly, it doesn’t mean that having COVID-19 has any effect on your risk of Alzheimer’s,” he added.

Also weighing in on the new study, Jonathan Schott, MD, professor of neurology, University College London, noted that dementia is the “main preexisting health condition associated with COVID-19 mortality, accounting for about one in four deaths from COVID-19 between March and June 2020.

“While some of this excessive mortality may relate to people with dementia being overrepresented in care homes, which were particularly hard hit by the pandemic, or due to general increased vulnerability to infections, there have been questions as to whether there are common factors that might increase susceptibility both to developing dementia and to dying from COVID-19,” Dr. Schott explained.

This “elegant paper” provides evidence for the latter, “suggesting a common genetic mechanism both for Alzheimer’s disease and for severe COVID-19 infection,” Dr. Schott said.

“The identification of a genetic risk factor and elucidation of inflammatory pathways through which it may increase risk has important implications for our understanding of both diseases, with potential implications for novel treatments,” he added.

The study was funded by the UK Dementia Research Institute. The authors have disclosed no relevant financial relationships. Dr. Schott serves as chief medical officer for Alzheimer’s Research UK and is clinical adviser to the UK Dementia Research Institute. Dr. Baillie has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Risk for Alzheimer’s disease (AD) and susceptibility to severe COVID-19 share a common genetic mechanism involved in the immune response to viruses, investigators report. The findings could lead to new treatment targets to slow progression and severity of both diseases.

Investigators found that a single genetic variant in the oligoadenylate synthetase 1 (OAS1) gene increases the risk for AD and that related variants in the same gene increase the likelihood of severe COVID-19 outcomes.

“These findings may allow us to identify new drug targets to slow progression of both diseases and reduce their severity,” Dervis Salih, PhD, senior research associate, UK Dementia Research Institute, University College London, said in an interview.

“Our work also suggests new approaches to treat both diseases with the same drugs,” Dr. Salih added.

The study was published online Oct. 7 in Brain.
 

Shared genetic network

The OAS1 gene is expressed in microglia, a type of immune cell that makes up around 10% of all cells in the brain.

In earlier work, investigators found evidence suggesting a link between the OAS1 gene and AD, but the function of the gene in microglia was unknown.

To further investigate the gene’s link to AD, they sequenced genetic data from 2,547 people – half with AD, and half without.

The genotyping analysis confirmed that the single-nucleotide polymorphism (SNP) rs1131454 within OAS1 is significantly associated with AD.

Given that the same OAS1 locus has recently been linked with severe COVID-19 outcomes, the researchers investigated four variants on the OAS1 gene.

Results indicate that SNPs within OAS1 associated with AD also show linkage to SNP variants associated with critical illness in COVID-19.

The rs1131454 (risk allele A) and rs4766676 (risk allele T) are associated with AD, and rs10735079 (risk allele A) and rs6489867 (risk allele T) are associated with critical illness with COVID-19, the investigators reported. All of these risk alleles dampen expression of OAS1.

“This study also provides strong new evidence that interferon signaling by the innate immune system plays a substantial role in the progression of Alzheimer’s,” said Dr. Salih.

“Identifying this shared genetic network in innate immune cells will allow us with future work to identify new biomarkers to track disease progression and also predict disease risk better for both disorders,” he added.
 

‘Fascinating’ link

In a statement from the UK nonprofit organization, Science Media Center, Kenneth Baillie, MBChB, with the University of Edinburgh, said this study builds on a discovery he and his colleagues made last year that OAS1 variants are associated with severe COVID-19.

“In the ISARIC4C study, we recently found that this is probably due to a change in the way cell membranes detect viruses, but this mechanism doesn’t explain the fascinating association with Alzheimer’s disease reported in this new work,” Dr. Baillie said.

“It is often the case that the same gene can have different roles in different parts of the body. Importantly, it doesn’t mean that having COVID-19 has any effect on your risk of Alzheimer’s,” he added.

Also weighing in on the new study, Jonathan Schott, MD, professor of neurology, University College London, noted that dementia is the “main preexisting health condition associated with COVID-19 mortality, accounting for about one in four deaths from COVID-19 between March and June 2020.

“While some of this excessive mortality may relate to people with dementia being overrepresented in care homes, which were particularly hard hit by the pandemic, or due to general increased vulnerability to infections, there have been questions as to whether there are common factors that might increase susceptibility both to developing dementia and to dying from COVID-19,” Dr. Schott explained.

This “elegant paper” provides evidence for the latter, “suggesting a common genetic mechanism both for Alzheimer’s disease and for severe COVID-19 infection,” Dr. Schott said.

“The identification of a genetic risk factor and elucidation of inflammatory pathways through which it may increase risk has important implications for our understanding of both diseases, with potential implications for novel treatments,” he added.

The study was funded by the UK Dementia Research Institute. The authors have disclosed no relevant financial relationships. Dr. Schott serves as chief medical officer for Alzheimer’s Research UK and is clinical adviser to the UK Dementia Research Institute. Dr. Baillie has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

The chances that unvaccinated family members will be infected or hospitalized with COVID-19 drop sharply if even one family member is vaccinated. The chances are reduced even further with each additional vaccinated or otherwise immune family member, according to new data.

Lead author Peter Nordström, MD, PhD, with the unit of geriatric medicine, Umeå (Sweden) University, said in an interview the message is important for public health: “When you vaccinate, you do not just protect yourself but also your relatives.”

The findings were published online on Oct. 11, 2021, in JAMA Internal Medicine.

Researchers analyzed data from 1,789,728 individuals from 814,806 families from nationwide registries in Sweden. All individuals had acquired immunity either from previously being infected with SARS-CoV-2 or by being fully vaccinated (that is, having received two doses of the Moderna, Pfizer, or Oxford/AstraZeneca vaccines). Persons were considered for inclusion until May 26, 2021.

Each person with immunity was matched in a 1:1 ratio to a person without immunity from a cohort of individuals with families that had from two to five members. Families with more than five members were excluded because of small sample sizes.

Primarily nonimmune families in which there was one immune family member had a 45%-61% lower risk of contracting COVID-19 (hazard ratio, 0.39-0.55; 95% confidence interval, 0.37-0.61; P < .001).

The risk reduction increased to 75%-86% when two family members were immune (HR, 0.14-0.25; 95% CI, 0.11-0.27; P < .001).

It increased to 91%-94% when three family members were immune (HR, 0.06-0.09; 95% CI, 0.04-0.10; P < .001) and to 97% with four immune family members (HR, 0.03; 95% CI, 0.02-0.05; P < .001).

“The results were similar for the outcome of COVID-19 infection that was severe enough to warrant a hospital stay,” the authors wrote. They listed as an example that, in three-member families in which two members were immune, the remaining nonimmune family member had an 80% lower risk for hospitalization (HR, 0.20; 95% CI, 0.10-0.43; P < .001).
 

Global implications

Dr. Nordström said the team used the family setting because it was more easily identifiable as a cohort with the national registries and because COVID-19 is spread among people in close contact with each other. The findings have implications for other groups that spend large amounts of time together and for herd immunity, he added.

The findings may be particularly welcome in regions of the world where vaccination rates are very low. The authors noted that most of the global population has not yet been vaccinated and that “it is anticipated that most of the population in low-income countries will be unable to receive a vaccine in 2021, with current vaccination rates suggesting that completely inoculating 70%-85% of the global population may take up to 5 years.”

Jill Foster, MD, a pediatric infectious disease specialist at the University of Minnesota, Minneapolis, said in an interview she agrees that the news could encourage countries that have very low vaccination rates.

This study may help motivate areas with few resources to start small, she said: “Even one is better than zero.”

She added that this news could also help ease the minds of families that have immunocompromised members or in which there are children who are too young to be vaccinated.

With these data, she said, people can see there’s something they can do to help protect a family member.

Dr. Foster said that although it’s intuitive to think that the more vaccinated people there are in a family, the safer people are, “it’s really nice to see the data coming out of such a large dataset.”

The authors acknowledged that a limitation of the study is that, at the time the study was conducted, the Delta variant was uncommon in Sweden. It is therefore unclear whether the findings regarding immunity are still relevant in Sweden and elsewhere now that the Delta strain is dominant.

The authors reported no relevant financial relationships. Dr. Foster has received grant support from Moderna.

A version of this article first appeared on Medscape.com.

The chances that unvaccinated family members will be infected or hospitalized with COVID-19 drop sharply if even one family member is vaccinated. The chances are reduced even further with each additional vaccinated or otherwise immune family member, according to new data.

Lead author Peter Nordström, MD, PhD, with the unit of geriatric medicine, Umeå (Sweden) University, said in an interview the message is important for public health: “When you vaccinate, you do not just protect yourself but also your relatives.”

The findings were published online on Oct. 11, 2021, in JAMA Internal Medicine.

Researchers analyzed data from 1,789,728 individuals from 814,806 families from nationwide registries in Sweden. All individuals had acquired immunity either from previously being infected with SARS-CoV-2 or by being fully vaccinated (that is, having received two doses of the Moderna, Pfizer, or Oxford/AstraZeneca vaccines). Persons were considered for inclusion until May 26, 2021.

Each person with immunity was matched in a 1:1 ratio to a person without immunity from a cohort of individuals with families that had from two to five members. Families with more than five members were excluded because of small sample sizes.

Primarily nonimmune families in which there was one immune family member had a 45%-61% lower risk of contracting COVID-19 (hazard ratio, 0.39-0.55; 95% confidence interval, 0.37-0.61; P < .001).

The risk reduction increased to 75%-86% when two family members were immune (HR, 0.14-0.25; 95% CI, 0.11-0.27; P < .001).

It increased to 91%-94% when three family members were immune (HR, 0.06-0.09; 95% CI, 0.04-0.10; P < .001) and to 97% with four immune family members (HR, 0.03; 95% CI, 0.02-0.05; P < .001).

“The results were similar for the outcome of COVID-19 infection that was severe enough to warrant a hospital stay,” the authors wrote. They listed as an example that, in three-member families in which two members were immune, the remaining nonimmune family member had an 80% lower risk for hospitalization (HR, 0.20; 95% CI, 0.10-0.43; P < .001).
 

Global implications

Dr. Nordström said the team used the family setting because it was more easily identifiable as a cohort with the national registries and because COVID-19 is spread among people in close contact with each other. The findings have implications for other groups that spend large amounts of time together and for herd immunity, he added.

The findings may be particularly welcome in regions of the world where vaccination rates are very low. The authors noted that most of the global population has not yet been vaccinated and that “it is anticipated that most of the population in low-income countries will be unable to receive a vaccine in 2021, with current vaccination rates suggesting that completely inoculating 70%-85% of the global population may take up to 5 years.”

Jill Foster, MD, a pediatric infectious disease specialist at the University of Minnesota, Minneapolis, said in an interview she agrees that the news could encourage countries that have very low vaccination rates.

This study may help motivate areas with few resources to start small, she said: “Even one is better than zero.”

She added that this news could also help ease the minds of families that have immunocompromised members or in which there are children who are too young to be vaccinated.

With these data, she said, people can see there’s something they can do to help protect a family member.

Dr. Foster said that although it’s intuitive to think that the more vaccinated people there are in a family, the safer people are, “it’s really nice to see the data coming out of such a large dataset.”

The authors acknowledged that a limitation of the study is that, at the time the study was conducted, the Delta variant was uncommon in Sweden. It is therefore unclear whether the findings regarding immunity are still relevant in Sweden and elsewhere now that the Delta strain is dominant.

The authors reported no relevant financial relationships. Dr. Foster has received grant support from Moderna.

A version of this article first appeared on Medscape.com.

The chances that unvaccinated family members will be infected or hospitalized with COVID-19 drop sharply if even one family member is vaccinated. The chances are reduced even further with each additional vaccinated or otherwise immune family member, according to new data.

Lead author Peter Nordström, MD, PhD, with the unit of geriatric medicine, Umeå (Sweden) University, said in an interview the message is important for public health: “When you vaccinate, you do not just protect yourself but also your relatives.”

The findings were published online on Oct. 11, 2021, in JAMA Internal Medicine.

Researchers analyzed data from 1,789,728 individuals from 814,806 families from nationwide registries in Sweden. All individuals had acquired immunity either from previously being infected with SARS-CoV-2 or by being fully vaccinated (that is, having received two doses of the Moderna, Pfizer, or Oxford/AstraZeneca vaccines). Persons were considered for inclusion until May 26, 2021.

Each person with immunity was matched in a 1:1 ratio to a person without immunity from a cohort of individuals with families that had from two to five members. Families with more than five members were excluded because of small sample sizes.

Primarily nonimmune families in which there was one immune family member had a 45%-61% lower risk of contracting COVID-19 (hazard ratio, 0.39-0.55; 95% confidence interval, 0.37-0.61; P < .001).

The risk reduction increased to 75%-86% when two family members were immune (HR, 0.14-0.25; 95% CI, 0.11-0.27; P < .001).

It increased to 91%-94% when three family members were immune (HR, 0.06-0.09; 95% CI, 0.04-0.10; P < .001) and to 97% with four immune family members (HR, 0.03; 95% CI, 0.02-0.05; P < .001).

“The results were similar for the outcome of COVID-19 infection that was severe enough to warrant a hospital stay,” the authors wrote. They listed as an example that, in three-member families in which two members were immune, the remaining nonimmune family member had an 80% lower risk for hospitalization (HR, 0.20; 95% CI, 0.10-0.43; P < .001).
 

Global implications

Dr. Nordström said the team used the family setting because it was more easily identifiable as a cohort with the national registries and because COVID-19 is spread among people in close contact with each other. The findings have implications for other groups that spend large amounts of time together and for herd immunity, he added.

The findings may be particularly welcome in regions of the world where vaccination rates are very low. The authors noted that most of the global population has not yet been vaccinated and that “it is anticipated that most of the population in low-income countries will be unable to receive a vaccine in 2021, with current vaccination rates suggesting that completely inoculating 70%-85% of the global population may take up to 5 years.”

Jill Foster, MD, a pediatric infectious disease specialist at the University of Minnesota, Minneapolis, said in an interview she agrees that the news could encourage countries that have very low vaccination rates.

This study may help motivate areas with few resources to start small, she said: “Even one is better than zero.”

She added that this news could also help ease the minds of families that have immunocompromised members or in which there are children who are too young to be vaccinated.

With these data, she said, people can see there’s something they can do to help protect a family member.

Dr. Foster said that although it’s intuitive to think that the more vaccinated people there are in a family, the safer people are, “it’s really nice to see the data coming out of such a large dataset.”

The authors acknowledged that a limitation of the study is that, at the time the study was conducted, the Delta variant was uncommon in Sweden. It is therefore unclear whether the findings regarding immunity are still relevant in Sweden and elsewhere now that the Delta strain is dominant.

The authors reported no relevant financial relationships. Dr. Foster has received grant support from Moderna.

A version of this article first appeared on Medscape.com.

Schools without mask requirements were three-and-a-half times more likely to have COVID-19 outbreaks than those enforcing mask mandates, according to new Centers for Disease Control and Prevention research.

The study, which focused on 1,000 schools in Arizona’s Maricopa and Pima counties, found that there were 113 COVID-19 outbreaks in schools without mask requirements in the first month of in-person learning. There were 16 outbreaks in schools with mask requirements.

“Masks in schools work to protect our children, to keep them and their school communities safe, and to keep them in school for in-person learning,” CDC Director Rochelle Walensky, MD, said at an Oct. 13 White House briefing.

But, she said, more than 95% of schools across the country had remained open through the end of September, despite 1,800 school closures affecting nearly 1 million students.

Protection for children in school is just one piece of the puzzle, Dr. Walensky said – there must also be COVID-safe practices at home to limit transmission. A CDC study published in October found that children had similar infection rates, compared with adults, confirming there is risk to people of all ages.

“For those children not yet eligible for vaccination, the best protection we can provide them is to make sure everyone around them in the household is vaccinated and to make sure they’re wearing a mask in school and during indoor extracurricular activities,” Dr. Walensky said.

Meanwhile, Pfizer’s vaccine for children ages 5-11 may be approved by early November. The Food and Drug Administration’s Vaccines and Related Biological Products Advisory Committee will meet Oct. 26 to discuss available data, and the CDC’s Advisory Committee on Immunization Practices will meet Nov. 2. A decision is expected soon after.

A version of this article first appeared on WebMD.com.

Schools without mask requirements were three-and-a-half times more likely to have COVID-19 outbreaks than those enforcing mask mandates, according to new Centers for Disease Control and Prevention research.

The study, which focused on 1,000 schools in Arizona’s Maricopa and Pima counties, found that there were 113 COVID-19 outbreaks in schools without mask requirements in the first month of in-person learning. There were 16 outbreaks in schools with mask requirements.

“Masks in schools work to protect our children, to keep them and their school communities safe, and to keep them in school for in-person learning,” CDC Director Rochelle Walensky, MD, said at an Oct. 13 White House briefing.

But, she said, more than 95% of schools across the country had remained open through the end of September, despite 1,800 school closures affecting nearly 1 million students.

Protection for children in school is just one piece of the puzzle, Dr. Walensky said – there must also be COVID-safe practices at home to limit transmission. A CDC study published in October found that children had similar infection rates, compared with adults, confirming there is risk to people of all ages.

“For those children not yet eligible for vaccination, the best protection we can provide them is to make sure everyone around them in the household is vaccinated and to make sure they’re wearing a mask in school and during indoor extracurricular activities,” Dr. Walensky said.

Meanwhile, Pfizer’s vaccine for children ages 5-11 may be approved by early November. The Food and Drug Administration’s Vaccines and Related Biological Products Advisory Committee will meet Oct. 26 to discuss available data, and the CDC’s Advisory Committee on Immunization Practices will meet Nov. 2. A decision is expected soon after.

A version of this article first appeared on WebMD.com.

Schools without mask requirements were three-and-a-half times more likely to have COVID-19 outbreaks than those enforcing mask mandates, according to new Centers for Disease Control and Prevention research.

The study, which focused on 1,000 schools in Arizona’s Maricopa and Pima counties, found that there were 113 COVID-19 outbreaks in schools without mask requirements in the first month of in-person learning. There were 16 outbreaks in schools with mask requirements.

“Masks in schools work to protect our children, to keep them and their school communities safe, and to keep them in school for in-person learning,” CDC Director Rochelle Walensky, MD, said at an Oct. 13 White House briefing.

But, she said, more than 95% of schools across the country had remained open through the end of September, despite 1,800 school closures affecting nearly 1 million students.

Protection for children in school is just one piece of the puzzle, Dr. Walensky said – there must also be COVID-safe practices at home to limit transmission. A CDC study published in October found that children had similar infection rates, compared with adults, confirming there is risk to people of all ages.

“For those children not yet eligible for vaccination, the best protection we can provide them is to make sure everyone around them in the household is vaccinated and to make sure they’re wearing a mask in school and during indoor extracurricular activities,” Dr. Walensky said.

Meanwhile, Pfizer’s vaccine for children ages 5-11 may be approved by early November. The Food and Drug Administration’s Vaccines and Related Biological Products Advisory Committee will meet Oct. 26 to discuss available data, and the CDC’s Advisory Committee on Immunization Practices will meet Nov. 2. A decision is expected soon after.

A version of this article first appeared on WebMD.com.

The World Health Organization and its partners recently released an ambitious plan, Defeating meningitis by 2030: A global road map. The goal is to reduce deaths and disabilities from bacterial meningitis, which kills about 250,000 people annually of the 1.2 million estimated to be infected.

This type of infection around the brain and spinal cord also causes long-term disabilities – deafness, learning problems, seizures, loss of limbs – in about one-quarter of survivors.

The leading causes of bacterial meningitis are Neisseria meningitidis (meningococcus), Streptococcus pneumoniae (pneumococcus), Haemophilus influenzae, and group B streptococcus. As with malaria, about half of the cases are in children under age 5 years. The most severely affected area for both infections is sub-Saharan Africa.

The main goal of the roadmap is to reduce vaccine-preventable cases of bacterial meningitis by 50% and deaths by 70% by 2030. WHO’s partners included the Centers for Disease Control and Prevention, the London School of Hygiene and Tropical Medicine, Médecins Sans Frontières (Doctors Without Borders), the Meningitis Research Foundation, PATH, UNICEF, and numerous global consultants.

For primary prevention and epidemic control, a major goal is to achieve higher vaccine coverage. Another goal is developing and deploying rapid diagnostic tests to guide treatment and prevention activities and measure the impact of vaccination. The lack of laboratory capacity to confirm the bacteria is a significant challenge. Also, patients often receive antibiotics before appropriate tests are conducted, and lumbar punctures are frequently not done.

The commitment to this project emerged in 2017. It was followed by a baseline analysis in 2018 and a draft roadmap the following year. Consultations with experts and with more than 600 patient groups in more than 90 countries followed.

Prevention through greater vaccine uptake was the top priority. Vaccination is considered the first line of defense against antibiotic resistance among the targeted bacteria.

Another goal is to quantify the decrease in antibiotic use for invasive infections or prophylaxis and the subsequent reduction in antimicrobial resistance in relation to increased vaccination.

Surveillance is weak in many regions, limiting the ability to detect epidemics and to respond appropriately. Similarly, there are limited data on the burden of sequelae, such as deafness, on meningitis survivors.

There is an inadequate supply of affordable vaccines to respond to epidemics.  Currently, routine vaccination against Neisseria meningitidis is occurring in 18 of 26 countries in the meningitis belt. Epidemics of meningococcus occur every few years in the driest time of the year and abate with the rains. Epidemics of pneumococcal meningitis are much rarer but follow a similar pattern; they have also been associated with crowding and alcohol use.

Care for those affected by meningitis is another focus, as is affirming the right to prevention and care. There’s a need for earlier recognition of the complications of meningitis and an increase in efforts to treat those complications.

WHO’s final goal in its roadmap is to boost awareness of meningitis and make it a priority for policymakers. Similarly, there is a need to educate communities about the disease, including how to access vaccines. If someone becomes ill, they need to be aware of the symptoms, the need for early treatment, and what aftercare is available.

Marie-Pierre Préziosi, MD, the core secretariat of WHO’s Technical Taskforce, told this news organization that while the roadmap looks aspirational, “it is feasible … you have strategic goals – each has milestones with time limits and who will do it.”

Regarding vaccinations, Dr. Préziosi said that “the strategy was a victim of its success. The mass campaign knocked down transmission completely.” Some countries are now waiting for multivalent vaccines. She said that vaccine hesitancy is not a significant problem in Africa “because the disease is so feared.”

Major obstacles to implementing the roadmap include the complacency of public health leaders and the COVID-19 lockdowns, which decreased vaccination coverage rates. “The second thing is also sufficient funding to do the research and innovation so that we get the affordable tools that we need globally,” Dr. Préziosi said.

Marilyn Felkner, DrPH, School of Human Ecology, University of Texas at Austin, said in an interview, “It’s very cliché, but we have often said that communicable diseases do not respect political boundaries. So to expect a country to be able to control that by themselves is a false hope.”

Regarding the roadmap, Dr. Felkner said, “I think that organizing ideas and having them in writing is always a good first step. And it can help people move forward if they’re feeling overwhelmed ... Having a written plan can certainly provide that fundamental basis. So, the important thing is not to say, ‘Oh, we have this great plan done; hope somebody picks up the plan.’ There’s got to be some momentum behind it, and hopefully some funding.”

Dr. Préziosi and Dr. Felkner have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

The World Health Organization and its partners recently released an ambitious plan, Defeating meningitis by 2030: A global road map. The goal is to reduce deaths and disabilities from bacterial meningitis, which kills about 250,000 people annually of the 1.2 million estimated to be infected.

This type of infection around the brain and spinal cord also causes long-term disabilities – deafness, learning problems, seizures, loss of limbs – in about one-quarter of survivors.

The leading causes of bacterial meningitis are Neisseria meningitidis (meningococcus), Streptococcus pneumoniae (pneumococcus), Haemophilus influenzae, and group B streptococcus. As with malaria, about half of the cases are in children under age 5 years. The most severely affected area for both infections is sub-Saharan Africa.

The main goal of the roadmap is to reduce vaccine-preventable cases of bacterial meningitis by 50% and deaths by 70% by 2030. WHO’s partners included the Centers for Disease Control and Prevention, the London School of Hygiene and Tropical Medicine, Médecins Sans Frontières (Doctors Without Borders), the Meningitis Research Foundation, PATH, UNICEF, and numerous global consultants.

For primary prevention and epidemic control, a major goal is to achieve higher vaccine coverage. Another goal is developing and deploying rapid diagnostic tests to guide treatment and prevention activities and measure the impact of vaccination. The lack of laboratory capacity to confirm the bacteria is a significant challenge. Also, patients often receive antibiotics before appropriate tests are conducted, and lumbar punctures are frequently not done.

The commitment to this project emerged in 2017. It was followed by a baseline analysis in 2018 and a draft roadmap the following year. Consultations with experts and with more than 600 patient groups in more than 90 countries followed.

Prevention through greater vaccine uptake was the top priority. Vaccination is considered the first line of defense against antibiotic resistance among the targeted bacteria.

Another goal is to quantify the decrease in antibiotic use for invasive infections or prophylaxis and the subsequent reduction in antimicrobial resistance in relation to increased vaccination.

Surveillance is weak in many regions, limiting the ability to detect epidemics and to respond appropriately. Similarly, there are limited data on the burden of sequelae, such as deafness, on meningitis survivors.

There is an inadequate supply of affordable vaccines to respond to epidemics.  Currently, routine vaccination against Neisseria meningitidis is occurring in 18 of 26 countries in the meningitis belt. Epidemics of meningococcus occur every few years in the driest time of the year and abate with the rains. Epidemics of pneumococcal meningitis are much rarer but follow a similar pattern; they have also been associated with crowding and alcohol use.

Care for those affected by meningitis is another focus, as is affirming the right to prevention and care. There’s a need for earlier recognition of the complications of meningitis and an increase in efforts to treat those complications.

WHO’s final goal in its roadmap is to boost awareness of meningitis and make it a priority for policymakers. Similarly, there is a need to educate communities about the disease, including how to access vaccines. If someone becomes ill, they need to be aware of the symptoms, the need for early treatment, and what aftercare is available.

Marie-Pierre Préziosi, MD, the core secretariat of WHO’s Technical Taskforce, told this news organization that while the roadmap looks aspirational, “it is feasible … you have strategic goals – each has milestones with time limits and who will do it.”

Regarding vaccinations, Dr. Préziosi said that “the strategy was a victim of its success. The mass campaign knocked down transmission completely.” Some countries are now waiting for multivalent vaccines. She said that vaccine hesitancy is not a significant problem in Africa “because the disease is so feared.”

Major obstacles to implementing the roadmap include the complacency of public health leaders and the COVID-19 lockdowns, which decreased vaccination coverage rates. “The second thing is also sufficient funding to do the research and innovation so that we get the affordable tools that we need globally,” Dr. Préziosi said.

Marilyn Felkner, DrPH, School of Human Ecology, University of Texas at Austin, said in an interview, “It’s very cliché, but we have often said that communicable diseases do not respect political boundaries. So to expect a country to be able to control that by themselves is a false hope.”

Regarding the roadmap, Dr. Felkner said, “I think that organizing ideas and having them in writing is always a good first step. And it can help people move forward if they’re feeling overwhelmed ... Having a written plan can certainly provide that fundamental basis. So, the important thing is not to say, ‘Oh, we have this great plan done; hope somebody picks up the plan.’ There’s got to be some momentum behind it, and hopefully some funding.”

Dr. Préziosi and Dr. Felkner have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

The World Health Organization and its partners recently released an ambitious plan, Defeating meningitis by 2030: A global road map. The goal is to reduce deaths and disabilities from bacterial meningitis, which kills about 250,000 people annually of the 1.2 million estimated to be infected.

This type of infection around the brain and spinal cord also causes long-term disabilities – deafness, learning problems, seizures, loss of limbs – in about one-quarter of survivors.

The leading causes of bacterial meningitis are Neisseria meningitidis (meningococcus), Streptococcus pneumoniae (pneumococcus), Haemophilus influenzae, and group B streptococcus. As with malaria, about half of the cases are in children under age 5 years. The most severely affected area for both infections is sub-Saharan Africa.

The main goal of the roadmap is to reduce vaccine-preventable cases of bacterial meningitis by 50% and deaths by 70% by 2030. WHO’s partners included the Centers for Disease Control and Prevention, the London School of Hygiene and Tropical Medicine, Médecins Sans Frontières (Doctors Without Borders), the Meningitis Research Foundation, PATH, UNICEF, and numerous global consultants.

For primary prevention and epidemic control, a major goal is to achieve higher vaccine coverage. Another goal is developing and deploying rapid diagnostic tests to guide treatment and prevention activities and measure the impact of vaccination. The lack of laboratory capacity to confirm the bacteria is a significant challenge. Also, patients often receive antibiotics before appropriate tests are conducted, and lumbar punctures are frequently not done.

The commitment to this project emerged in 2017. It was followed by a baseline analysis in 2018 and a draft roadmap the following year. Consultations with experts and with more than 600 patient groups in more than 90 countries followed.

Prevention through greater vaccine uptake was the top priority. Vaccination is considered the first line of defense against antibiotic resistance among the targeted bacteria.

Another goal is to quantify the decrease in antibiotic use for invasive infections or prophylaxis and the subsequent reduction in antimicrobial resistance in relation to increased vaccination.

Surveillance is weak in many regions, limiting the ability to detect epidemics and to respond appropriately. Similarly, there are limited data on the burden of sequelae, such as deafness, on meningitis survivors.

There is an inadequate supply of affordable vaccines to respond to epidemics.  Currently, routine vaccination against Neisseria meningitidis is occurring in 18 of 26 countries in the meningitis belt. Epidemics of meningococcus occur every few years in the driest time of the year and abate with the rains. Epidemics of pneumococcal meningitis are much rarer but follow a similar pattern; they have also been associated with crowding and alcohol use.

Care for those affected by meningitis is another focus, as is affirming the right to prevention and care. There’s a need for earlier recognition of the complications of meningitis and an increase in efforts to treat those complications.

WHO’s final goal in its roadmap is to boost awareness of meningitis and make it a priority for policymakers. Similarly, there is a need to educate communities about the disease, including how to access vaccines. If someone becomes ill, they need to be aware of the symptoms, the need for early treatment, and what aftercare is available.

Marie-Pierre Préziosi, MD, the core secretariat of WHO’s Technical Taskforce, told this news organization that while the roadmap looks aspirational, “it is feasible … you have strategic goals – each has milestones with time limits and who will do it.”

Regarding vaccinations, Dr. Préziosi said that “the strategy was a victim of its success. The mass campaign knocked down transmission completely.” Some countries are now waiting for multivalent vaccines. She said that vaccine hesitancy is not a significant problem in Africa “because the disease is so feared.”

Major obstacles to implementing the roadmap include the complacency of public health leaders and the COVID-19 lockdowns, which decreased vaccination coverage rates. “The second thing is also sufficient funding to do the research and innovation so that we get the affordable tools that we need globally,” Dr. Préziosi said.

Marilyn Felkner, DrPH, School of Human Ecology, University of Texas at Austin, said in an interview, “It’s very cliché, but we have often said that communicable diseases do not respect political boundaries. So to expect a country to be able to control that by themselves is a false hope.”

Regarding the roadmap, Dr. Felkner said, “I think that organizing ideas and having them in writing is always a good first step. And it can help people move forward if they’re feeling overwhelmed ... Having a written plan can certainly provide that fundamental basis. So, the important thing is not to say, ‘Oh, we have this great plan done; hope somebody picks up the plan.’ There’s got to be some momentum behind it, and hopefully some funding.”

Dr. Préziosi and Dr. Felkner have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A simple wristband containing biometric monitoring sensors is able to pick up early infection from both influenza and the common cold before symptoms develop. Moreover, it can predict the severity of the illness once it becomes symptomatic, new research shows.

“Prior to the development of symptoms, people are still infectious and can potentially infect others,” senior author Jessilyn Dunn, PhD, Duke University, Durham, N.C., told this news organization.

“That’s why it’s so important to be able to detect infection even when a person doesn’t feel symptomatic, as this would help prevent the spread of pathogens that occur before somebody knows they are sick – and which is why it is important from a public health perspective,” she added.

The study was published online Sept. 29, 2021, in JAMA Network Open.
 

Two challenge studies

The study involved 31 participants who were inoculated with the H1N1 influenza virus and 18 others who were inoculated with rhinovirus. The rhinovirus challenge study was conducted in 2015, and the H1N1 challenge study was carried out in 2018. Both groups of patients were inoculated via intranasal drops of either the diluted H1N1 virus or the diluted rhinovirus strain type 16.

Participants in both challenge studies wore the E4 wristband (Empatica). Those in the influenza study wore the wristband 1 day before and 11 days after being inoculated, and those in the rhinovirus study wore the wristband for 4 days before and 5 days after inoculation. The E4 wristband measures heart rate, skin temperature, electrodermal activity, and movement.

Symptoms were typical of each infection and were classified as both observable events, such as runny nose, cough, and wheezy chest, or unobservable events, such as muscle soreness and fatigue. Infection status was classified as asymptomatic or noninfectious (AON), mild, or moderate.

The biosensors contained within the wristband were able to detect the presence or absence of H1N1 infection with an accuracy of 79% within 12 hours after participants had been inoculated and an accuracy of 92% within 24 hours of being inoculated, the authors report. Thus, “we could assess whether or not a participant was infected with H1N1 between 24 and 36 hours before symptom onset,” the investigators noted.

The median time for symptom onset following the rhinovirus challenge was 36 hours after inoculation. The biosensors predicted the presence or absence of rhinovirus infection with an accuracy of 88%, the authors wrote. And when both viral challenges were combined, models predicting infection had an accuracy of 76% at 24 hours after participants being inoculated.
 

Prediction of severity

Twelve hours after participants had been inoculated, the technology was also able to predict the development of either AON or moderate H1N1 infection with 83% accuracy. For rhinovirus, the predictive accuracy of distinguishing AON versus moderate infection was slightly higher at 92% whereas for both viruses combined, the technology predicted the future development of AON versus moderate infection with an 84% accuracy rate.

As the authors pointed out, the ability to identify individuals during the early critical stage of viral infection could have wide-ranging effects. “In the midst of the global SARS-CoV-2 pandemic, the need for novel approaches like this has never been more apparent,” they suggested.

And in point of fact, in a not-yet peer-reviewed study using a real-time smartwatch-based alerting system again designed to detect aberrant physiologic and activity signals associated with early infection, Stanford (Calif.) University investigators found that alerts were generated for presymptomatic and asymptomatic COVID-19 infections in 78% of cases in over 3200 participants tested at a median of 3 days prior to symptom onset.

The authors also noted that their system is scalable to millions of users, thus offering a personal health monitoring system that can operate in real time.

In a comment, Steven Steinhubl, MD, a research scientist and formerly the director of digital medicine at Scripps Research’s Translational Institute, La Jolla, Calif., told this news organization that he personally has a lot of faith in this type of technology.

“Unfortunately, COVID-19 has changed our perspective about respiratory infections but if you think of the bad flu seasons we’ve had in the past, people do die from influenza, so I think there is a lot of value [in this technology], although the degree of value depends on the severity of the infection,” he said.

For example, if people actually ever go back into work together, early recognition that an employee might have influenza or another highly contagious infection could alert them to the necessity to stay home and self-isolate.

“We have a bit to go before we get there,” Dr. Steinhubl acknowledged, “but you could have a really big impact on the spread of any infectious disease that would be better for everybody.”

Dr. Dunn has disclosed no relevant financial relationships. Dr. Steinhubl is chief medical officer at physIQ, a company involved in the development of personalized analytics.

A version of this article first appeared on Medscape.com.

A simple wristband containing biometric monitoring sensors is able to pick up early infection from both influenza and the common cold before symptoms develop. Moreover, it can predict the severity of the illness once it becomes symptomatic, new research shows.

“Prior to the development of symptoms, people are still infectious and can potentially infect others,” senior author Jessilyn Dunn, PhD, Duke University, Durham, N.C., told this news organization.

“That’s why it’s so important to be able to detect infection even when a person doesn’t feel symptomatic, as this would help prevent the spread of pathogens that occur before somebody knows they are sick – and which is why it is important from a public health perspective,” she added.

The study was published online Sept. 29, 2021, in JAMA Network Open.
 

Two challenge studies

The study involved 31 participants who were inoculated with the H1N1 influenza virus and 18 others who were inoculated with rhinovirus. The rhinovirus challenge study was conducted in 2015, and the H1N1 challenge study was carried out in 2018. Both groups of patients were inoculated via intranasal drops of either the diluted H1N1 virus or the diluted rhinovirus strain type 16.

Participants in both challenge studies wore the E4 wristband (Empatica). Those in the influenza study wore the wristband 1 day before and 11 days after being inoculated, and those in the rhinovirus study wore the wristband for 4 days before and 5 days after inoculation. The E4 wristband measures heart rate, skin temperature, electrodermal activity, and movement.

Symptoms were typical of each infection and were classified as both observable events, such as runny nose, cough, and wheezy chest, or unobservable events, such as muscle soreness and fatigue. Infection status was classified as asymptomatic or noninfectious (AON), mild, or moderate.

The biosensors contained within the wristband were able to detect the presence or absence of H1N1 infection with an accuracy of 79% within 12 hours after participants had been inoculated and an accuracy of 92% within 24 hours of being inoculated, the authors report. Thus, “we could assess whether or not a participant was infected with H1N1 between 24 and 36 hours before symptom onset,” the investigators noted.

The median time for symptom onset following the rhinovirus challenge was 36 hours after inoculation. The biosensors predicted the presence or absence of rhinovirus infection with an accuracy of 88%, the authors wrote. And when both viral challenges were combined, models predicting infection had an accuracy of 76% at 24 hours after participants being inoculated.
 

Prediction of severity

Twelve hours after participants had been inoculated, the technology was also able to predict the development of either AON or moderate H1N1 infection with 83% accuracy. For rhinovirus, the predictive accuracy of distinguishing AON versus moderate infection was slightly higher at 92% whereas for both viruses combined, the technology predicted the future development of AON versus moderate infection with an 84% accuracy rate.

As the authors pointed out, the ability to identify individuals during the early critical stage of viral infection could have wide-ranging effects. “In the midst of the global SARS-CoV-2 pandemic, the need for novel approaches like this has never been more apparent,” they suggested.

And in point of fact, in a not-yet peer-reviewed study using a real-time smartwatch-based alerting system again designed to detect aberrant physiologic and activity signals associated with early infection, Stanford (Calif.) University investigators found that alerts were generated for presymptomatic and asymptomatic COVID-19 infections in 78% of cases in over 3200 participants tested at a median of 3 days prior to symptom onset.

The authors also noted that their system is scalable to millions of users, thus offering a personal health monitoring system that can operate in real time.

In a comment, Steven Steinhubl, MD, a research scientist and formerly the director of digital medicine at Scripps Research’s Translational Institute, La Jolla, Calif., told this news organization that he personally has a lot of faith in this type of technology.

“Unfortunately, COVID-19 has changed our perspective about respiratory infections but if you think of the bad flu seasons we’ve had in the past, people do die from influenza, so I think there is a lot of value [in this technology], although the degree of value depends on the severity of the infection,” he said.

For example, if people actually ever go back into work together, early recognition that an employee might have influenza or another highly contagious infection could alert them to the necessity to stay home and self-isolate.

“We have a bit to go before we get there,” Dr. Steinhubl acknowledged, “but you could have a really big impact on the spread of any infectious disease that would be better for everybody.”

Dr. Dunn has disclosed no relevant financial relationships. Dr. Steinhubl is chief medical officer at physIQ, a company involved in the development of personalized analytics.

A version of this article first appeared on Medscape.com.

A simple wristband containing biometric monitoring sensors is able to pick up early infection from both influenza and the common cold before symptoms develop. Moreover, it can predict the severity of the illness once it becomes symptomatic, new research shows.

“Prior to the development of symptoms, people are still infectious and can potentially infect others,” senior author Jessilyn Dunn, PhD, Duke University, Durham, N.C., told this news organization.

“That’s why it’s so important to be able to detect infection even when a person doesn’t feel symptomatic, as this would help prevent the spread of pathogens that occur before somebody knows they are sick – and which is why it is important from a public health perspective,” she added.

The study was published online Sept. 29, 2021, in JAMA Network Open.
 

Two challenge studies

The study involved 31 participants who were inoculated with the H1N1 influenza virus and 18 others who were inoculated with rhinovirus. The rhinovirus challenge study was conducted in 2015, and the H1N1 challenge study was carried out in 2018. Both groups of patients were inoculated via intranasal drops of either the diluted H1N1 virus or the diluted rhinovirus strain type 16.

Participants in both challenge studies wore the E4 wristband (Empatica). Those in the influenza study wore the wristband 1 day before and 11 days after being inoculated, and those in the rhinovirus study wore the wristband for 4 days before and 5 days after inoculation. The E4 wristband measures heart rate, skin temperature, electrodermal activity, and movement.

Symptoms were typical of each infection and were classified as both observable events, such as runny nose, cough, and wheezy chest, or unobservable events, such as muscle soreness and fatigue. Infection status was classified as asymptomatic or noninfectious (AON), mild, or moderate.

The biosensors contained within the wristband were able to detect the presence or absence of H1N1 infection with an accuracy of 79% within 12 hours after participants had been inoculated and an accuracy of 92% within 24 hours of being inoculated, the authors report. Thus, “we could assess whether or not a participant was infected with H1N1 between 24 and 36 hours before symptom onset,” the investigators noted.

The median time for symptom onset following the rhinovirus challenge was 36 hours after inoculation. The biosensors predicted the presence or absence of rhinovirus infection with an accuracy of 88%, the authors wrote. And when both viral challenges were combined, models predicting infection had an accuracy of 76% at 24 hours after participants being inoculated.
 

Prediction of severity

Twelve hours after participants had been inoculated, the technology was also able to predict the development of either AON or moderate H1N1 infection with 83% accuracy. For rhinovirus, the predictive accuracy of distinguishing AON versus moderate infection was slightly higher at 92% whereas for both viruses combined, the technology predicted the future development of AON versus moderate infection with an 84% accuracy rate.

As the authors pointed out, the ability to identify individuals during the early critical stage of viral infection could have wide-ranging effects. “In the midst of the global SARS-CoV-2 pandemic, the need for novel approaches like this has never been more apparent,” they suggested.

And in point of fact, in a not-yet peer-reviewed study using a real-time smartwatch-based alerting system again designed to detect aberrant physiologic and activity signals associated with early infection, Stanford (Calif.) University investigators found that alerts were generated for presymptomatic and asymptomatic COVID-19 infections in 78% of cases in over 3200 participants tested at a median of 3 days prior to symptom onset.

The authors also noted that their system is scalable to millions of users, thus offering a personal health monitoring system that can operate in real time.

In a comment, Steven Steinhubl, MD, a research scientist and formerly the director of digital medicine at Scripps Research’s Translational Institute, La Jolla, Calif., told this news organization that he personally has a lot of faith in this type of technology.

“Unfortunately, COVID-19 has changed our perspective about respiratory infections but if you think of the bad flu seasons we’ve had in the past, people do die from influenza, so I think there is a lot of value [in this technology], although the degree of value depends on the severity of the infection,” he said.

For example, if people actually ever go back into work together, early recognition that an employee might have influenza or another highly contagious infection could alert them to the necessity to stay home and self-isolate.

“We have a bit to go before we get there,” Dr. Steinhubl acknowledged, “but you could have a really big impact on the spread of any infectious disease that would be better for everybody.”

Dr. Dunn has disclosed no relevant financial relationships. Dr. Steinhubl is chief medical officer at physIQ, a company involved in the development of personalized analytics.

A version of this article first appeared on Medscape.com.