Heavy duty N95 and KN95 masks are best at warding of COVID-19, while commonly worn surgical and cloth face coverings filter only about 10 percent of exhaled aerosols, according to a new study.

The Centers for Disease Control and Prevention conceded Friday that cloth masks are less effective than surgical or respirator masks as protection against COVID-19. The updated guidance reflects ...

Face masks of the category FFP2 wait for further processing at the production line of Moldex-Metric, a German producer of protective work wear, in Walddorfhaeslach, southern Germany, on Jan. 20.

Well-fitting disposable surgical masks and KN95s — another type of respirator mask — are more protective than all cloth masks, and well-fitting respirators, including N95s, offer the highest ...