If you came into close contact with someone who has COVID-19, you should wear a high-quality mask as soon as you find out you were exposed, and for 10 full days after exposure.

The CDC recommends that you get tested for COVID-19 five full days after exposure.

If you test positive, you should isolate immediately.
Even if you test negative, you should continue wearing a high-quality mask when indoors and around other people through day 10.

Masking is essential to limit the spread of COVID-19.. If you have a weakened immune system, you should isolate through day 20. The CDC recommends repeat COVID-19 testing and speaking with your healthcare provider before ending isolation.

Updated November 22, 2023