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How Face Masks Work and Which Types Offer the Best Covid-19 Protection [paywall] – Breaking down different types of coverings, the proper way to take them on and off and how to tell if a mask is professional grade – A Visual Guide” “…Common masks fall into three categories: cloth masks or coverings like gaiters, intended to prevent an infected person from spreading the virus by catching large droplets; surgical masks, with a more sophisticated design also meant to prevent the wearer from spreading diseases; and N95 masks, which protect the wearer as well, and fit tightly to the face…”

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