CDC updates mask guidance: N95 and KN95 provide best protection
The Centers for Disease Control and Prevention on Friday, January 14, 2022 updated its guidance on masks for the general public, now saying that people "may choose" to wear N95 and KN95 masks because they offer the best protection against Covid-19.
The agency says that the "CDC continues to recommend that you wear the most protective mask you can that fits well and that you will wear consistently."