Correct and consistent mask use is an important step everyone can take to reduce the risk of catching and spreading COVID-19. Masks are most effective when everyone is wearing them, but not all masks provide equal protection. How tight the mask fits, how well it filters...

Correct and consistent mask use is an important step everyone can take to reduce the risk of catching and spreading COVID-19. Masks are most effective when everyone is wearing them, but not all masks provide equal protection. How tight the mask fits, how well it filters...

Correct and consistent mask use is an important step everyone can take to reduce the risk of catching and spreading COVID-19. Masks are most effective when everyone is wearing them, but not all masks provide equal protection. How tight the mask fits, how well it filters...

Correct and consistent mask use is an important step everyone can take to reduce the risk of catching and spreading COVID-19. Masks are most effective when everyone is wearing them, but not all masks provide equal protection. How tight the mask fits, how well it filters...