Science
Variations in masks' ability to prevent #SARSCoV2 transmission can be explained by different settings of virus abundance, finds a new Science study, which reports that in most environments, where airborne virus abundance is low, face masks are highly effective.

SCIENCE.SCIENCEMAG.ORG
Face masks effectively limit the probability of SARS-CoV-2 transmission
The effectiveness of masks in preventing the transmission of severe acute respiratory syndrome coronavirus 2 has been debated since the beginning of the COVID-19 pandemic. One important question is whether masks are effective despite the forceful expulsion of respiratory matter during coughing and s...