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news.yahoo.com
“We recommend now based on this study that people use a three-layer mask,” she said, where “the outer two layers are a tightly woven but flexible material that allows the mask to conform to your face.” The middle layer of such a mask is a filter. A two-layer mask could also work, Marr said, provided it had a “good, tight weave.”
Alexander Nazaryan
·National Correspondent
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Study: A good cloth mask is a powerful weapon against the coronavirus
Study: A good cloth mask is a powerful weapon against the coronavirus
Face coverings, including masks made of cloth, are highly effective in protecting the people who wear them and those around them, according to a new study.
Alexander Nazaryan·National Correspondent
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