News from the FDA/CDC

COVID-19–positive or exposed? What to do next


When should the person who has been exposed get tested?

After the exposure, ‘’you should probably wait 2-3 days,” Dr. Offit said. “The virus has to reproduce itself.”

Testing should be done by those exposed at least once, Dr. Adalja said.

“But there’s data to support daily testing to guide their activities, but this is not CDC guidance. Home tests are sufficient for this purpose.”

At what point can the infected person mingle safely with others?

“Technically, if asymptomatic, 10 days without a mask, 5 days with a mask,” said Dr. Adalja. “I think this could also be guided with home test negativity being a gauge [as to whether to mingle].”

A version of this article first appeared on


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