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Still Confused About Masks? Heres The Science Behind How Face Masks Prevent Coronavirus

Surgical masks come in numerous thicknesses—some are three-ply, for example, while others are four-ply—which impacts their ability to guard you from splashes, sprays, large-particle droplets, or splatters which will contain viruses or bacteria. A study in September by ECRI, a nonprofit group that evaluates medical expertise, found that as many as 70 % of the KN95 masks being sold within […]