You have to go read the source studies not some activist
Posted on: July 9, 2020 at 21:34:52 CT
ummmm MU
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scientist's interpretation of it. From the study:
"Although direct evidence is limited, the optimum use of face masks, in particular N95 or similar respirators in health-care settings and 12–16-layer cotton or surgical masks in the community, could depend on contextual factors; action is needed at all levels to address the paucity of better evidence"