(27.08.2021)

– If you’ve had close contact with someone who has COVID-19, you should get tested 3-5 days after your exposure, even if you don’t have symptoms. You should also wear a mask indoors in public for 14 days following exposure or until your test result is negative. You should isolate for 10 days if your test result is positive.

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What We Know

– COVID-19 vaccines are safe and effective at preventing COVID-19, including severe illness and death.
– COVID-19 vaccines are effective against severe disease and death from variants of the virus that causes COVID-19 currently circulating in the United States, including the Delta variant.
– Infections happen in only a small proportion of people who are fully vaccinated, even with the Delta variant. When these infections occur among vaccinated people, they tend to be mild.
– If you are fully vaccinated and become infected with the Delta variant, you can spread the virus to others.
– People with weakened immune systems, including people who take immunosuppressive medications, may not be protected even if fully vaccinated.

Published July 28, 2021
Updated Aug. 12, 2021

Anyone who has been potentially exposed to the virus should get tested, the C.D.C. now says. Previous guidance recommended testing only for fully vaccinated people who were symptomatic.