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 ...
A new study finds that cloth masks alone provide less protection from the coronavirus than a layered approach or disposable masks, such as surgical masks, KN95s and N95s but washing, drying reusable ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback