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Face shields and masks with exhalation valves are not effective

  • 1.  Face shields and masks with exhalation valves are not effective

    Forum Officer
    Posted 09-02-2020 09:30
    Face shields and masks with exhalation valves are not effective at preventing COVID-19 transmission, finds a new droplet dispersal study. (Physics of Fluids journal, 1 September 2020)
    https://aip.scitation.org/doi/10.1063/5.0022968

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    Brad Conrad
    Director of Society of Physics Students and Sigma Pi Sigma
    College Park, MD
    (301) 209-3111
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