CDC says masks must fit tightly – and two are better than one
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12 February 2021CDC says masks must fit tightly – and two are better than one
On 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 COVID-19 strains emerging around the world, it is important to properly use the right kinds of face masks.
