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How Face Masks Work and Which Types Offer the Best Covid-19 Protection

WSJ Original article ›
LyrArc Article Gist
An in depth look at face masks, how they protect, how to wear, and which types are available. Three layers are needed in a face mask, an inner layer near the mouth that gets moist, a middle filtration layer, and an outside layer exposed to the environment. When removing do not touch the front of the mask, remove by touching the straps at the back of your head.



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