MackayIM on Nostr: Study Confirms One Type of COVID Mask Is 'Significantly Better' Than Others. -zero ...

Study Confirms One Type of COVID Mask Is 'Significantly Better' Than Others.
-zero surprises here. Good work Don et al.
https://www.sciencealert.com/study-confirms-one-type-of-covid-mask-is-significantly-better-than-others