Wear a mask

If you are not fully vaccinated and aged 2 or older, you should wear a mask in indoor public places.

In general, you do not need to wear a mask in outdoor settings.

In areas with high numbers of COVID-19 cases, consider wearing a mask in crowded outdoor settings and for activities with close contact with others who are not fully vaccinated.

If you are fully vaccinated and have a condition or are taking medications that weaken your immune system, you may need to keep taking steps to protect yourself, like wearing a mask. Talk to your healthcare provider about steps you can take to manage your health and risks.

If you are fully vaccinated, see When You’ve Been Fully Vaccinated.

Masks are required on planes, buses, trains, and other forms of public transportation traveling into, within, or out of the United States and in U.S. transportation hubs such as airports and stations. Travelers are not required to wear a mask in outdoor areas of a conveyance (like on a ferry or the top deck of a bus). CDC recommends that travelers who are not fully vaccinated continue to wear a mask and maintain physical distance when traveling.