Iznogud
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On the efficacy of wearing masks or scarves from an article in the NY Times...
"When researchers conducted systematic review of a variety of interventions used during the SARS outbreak in 2003, they found that washing hands more than 10 times daily was 55 percent effective in stopping virus transmission, while wearing a mask was actually more effective — at about 68 percent. Wearing gloves offered about the same amount of protection as frequent hand-washing, and combining all measures — hand-washing, masks, gloves and a protective gown — increased the intervention effectiveness to 91 percent."
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More Americans Should Probably Wear Masks for Protection (Published 2020)
Experts have started to question whether masks may offer at least some protection to healthy individuals and essential workers.www.nytimes.com

Iz