Face masks, like any article of clothing, get dirty with wear. They can also carry the coronavirus if an infected person comes in contact with you. The Centers for Disease Control and Prevention ...

The omicron variant of COVID-19 has health authorities encouraging folks to upgrade from cloth masks to N95s, KN95s or at the very least, surgical masks. Dr. Elizabeth Matsui, an allergist, ...

Properly fitted N95 masks should filter 94-95 percent of viral particles. Justin Sullivan / Getty Images The story of the United States’ evolving relationship with masks is a complicated one. When the ...

For almost two years, masking up has been a fundamental part of America's COVID-19 prevention tactics. But a post on social media claims the type of mask that many wear to prevent the spread of the ...

A medical assistant working at a drive-up coronavirus testing clinic in Puyallup, Wash., on Jan. 4. (Ted S. Warren/AP) You’re reading The Checkup With Dr. Wen, a newsletter on how to navigate covid-19 ...