Measurement of cough-wind pressure: masks for mitigating an influenza pandemic.
2010
To assess the degree to which face masks reduce the strength of cough-wind, we measured the wind pressure in front of the mouth with and without the wearing of masks. We found that any conventional mask made from paper, cotton gauze, or non-woven fabrics reduced the wind pressure to less than one-tenth of that recorded when no mask was worn.
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