People Exposed to Covid May Need to Take as Many as Three At-Home Tests, F.D.A. Says
The U.S. Food and Drug Administration issued a new recommendation on Thursday that asymptomatic people who are using at-home Covid-19 antigen tests take at least three tests, each spaced 48 hours apart, to reduce the odds of missing an infection. People who have Covid-19 symptoms should take at least two tests, 48 hours apart, according…