Are Masks a Kind of Vaccine Against COVID-19?

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New research suggests face masks may act as a crude vaccine of sorts. The theory -- and it remains largely a theory -- is that by filtering out airborne coronavirus droplets and thereby lowering the dose of SARS-CoV-2 a person inhales, infections have much less chance of producing symptoms.

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from WebMD Healthhttps://img.webmd.com/dtmcms/live/webmd/consumer_assets/site_images/article_thumbnails/video/truth-about-face-masks-1800x1200.jpg https://ift.tt/3ie3hbS

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