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What to Do If You Were Exposed to COVID

发布时间:2026-09-05网络技术评论
Learn what to do if you are exposed to COVID-19, including how long to wear a mask, what to do if symptoms develop, and when to take a COVID-19 test.

UPDATE Given new evidence on the B.1.617.2 (Delta) variant,。

staff, regardless of vaccination status. Children should return to full-time in-person learning in the fall with layered prevention strategies in place. , and visitors to K-12 schools, CDC has updated the guidance for fully vaccinated people. CDC recommends universal indoor masking for all teachers, students。

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