Scientific American: Why We Need to Upgrade Our Face Masks—and Where to Get Them

Scientific American: Why We Need to Upgrade Our Face Masks—and Where to Get Them. “There is now a cornucopia of high-filtration respirator-style masks on the market, including N95s, Chinese-made KN95s and South Korean–made KF94s. They have been widely available and relatively affordable for months and provide better protection than cloth or surgical masks. Yet it was not until September 10 that the CDC finally updated its guidance to say the general public could wear N95s and other medical-grade masks now that they are in sufficient supply.”

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