New research by the agency shows transmission of the virus can be reduced by up to 96.5 percent if both an infected individual and an uninfected individual wear tightly fitted surgical masks or a cloth-and-surgical-mask combination.
from The Boston Globe https://ift.tt/3qaZPD0
New research by the agency shows transmission of the virus can be reduced by up to 96.5 percent if both an infected individual and an uninfected individual wear tightly fitted surgical masks or a cloth-and-surgical-mask combination.
https://ift.tt/3a8BW9F February 11, 2021 at 01:33AM
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