Wearing Masks to Prevent Coronavirus: Here’s What Scientists KnowNYT > World News

The accumulating research may be imperfect, and it’s still evolving, but the takeaway is simple. Right now, masks are necessary to slow the pandemic.The accumulating research may be imperfect, and it’s still evolving, but the takeaway is simple. Right now, masks are necessary to slow the pandemic.NYT > World News

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