CDC says masks must fit tightly – and two are better than one
- Written by Scott N. Schiffres, Assistant Professor of Mechanical Engineering, Binghamton University, State University of New York
Masks work only if they fit well, and wearing two can ensure a tight fit. Eduardo Maquilón/Getty Images/Stringer via Getty Images NewsOn Feb. 10, the Centers for Disease Control and Prevention released new mask guidelines based on a study of how mask fit affects the wearer’s exposure to airborne particles. With more transmissible...
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