CDC study highlights importance of good mask fit
A released today by the Centers for Disease Control and Prevention highlights the importance of good fit to maximize mask performance. CDC conducted lab experiments with dummies to assess two ways of improving the fit of medical procedure masks: wearing a cloth mask over the medical procedure mask; and knotting the ear loops of the medical procedure mask, then tucking in and flattening the extra material close to the face. Each modification substantially reduced wearer exposure, CDC said.
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