Most face masks won’t stop COVID-19 indoors, study warns
Excerpt: by John Anderer ShareTweet New research reveals that cloth masks filter just 10% of exhaled aerosols, with many people not wearing coverings that fit their face properly. WATERLOO, Ontario — N95 or KN95 face masks may be the best way to avoid COVID-19 during crowded indoor events. That’s the recommendation from a new study reporting ... Read more