Wear a mask correctly and consistently for the best protection. Be sure to wash your hands or use hand sanitizer before putting on a mask and do not touch the mask when wearing it. If you have to often touch/adjust your mask, it doesn’t fit you properly, and you may need to find a different mask or make adjustments.
CDC recommends that people wear masks in public settings, at events and gatherings, and anywhere they will be around other people. Effective February 2, 2021, 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.
For more specific guidance on how to select masks and how to wear them, check out the CDC guidelines.