• Should I Be Wearing an N95 or KN95? Understanding the Evolving Advice on Masks

    6 days ago - By Washington Post

    Advice from U.S. authorities on the need for face masks has flipped back and forth since Covid-19 took hold in 2020. In May, the Centers for Disease Control and Prevention said immunized Americans could ditch their masks in most settings. It reversed course in July amid a rise in cases caused by the more transmissible delta variant. Now, with the quickly spreading omicron variant causing a surge in infections, the agency is urging wider use of medical-grade masks in the general public. It revise
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