If You Are Unvaccinated, Wear a Mask
Masks are an additional step to help prevent people from getting and spreading COVID-19. They provide a barrier that keeps respiratory droplets from spreading. If you are unvaccinated, wear a mask and take every day preventive actions in public settings.
The Centers for Disease Control and Prevention (CDC) recommends that unvaccinated people wear masks in public settings, at events and gatherings, and anywhere they will be around other people. Masks are still 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.
For optimal protection, CDC recommends choosing a mask that fits snugly against your face, has at least two layers, and completely covers your nose and mouth.