Get Vaccinated Authorized COVID-19 vaccines can help protect you from COVID-19. You should get a COVID-19 vaccine as soon as you can. Wear a mask Everyone 2 years or older who is not fully vaccinated 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. People who have a condition or are taking medications that weaken their immune system may not be fully protected even if they are fully vaccinated. They should continue to take all precautions recommended for unvaccinated people, including wearing a well-fitted mask, until advised otherwise by their healthcare provider. If you are fully vaccinated, to maximize protection and prevent possibly spreading COVID-19 to others, wear a mask indoors in public if you are in an area of substantial or high transmission. Once you are fully vaccinated, you may be able to start doing some things that you had stopped doing because of the pandemic.