Coronavirus: New Research Reveals Which Face Masks Work Best | NBC Nightly News
August 11, 2020
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1:31Now PlayingCoronavirus: New Research Reveals Which Face Masks Work Best | NBC Nightly News
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as posted by the channelResearchers at Duke Health tested 14 different types of masks with a simple experiment designed to visualize small droplets or particles sprayed during regular speech.
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Coronavirus: New Research Reveals Which Face Masks Work Best | NBC Nightly News
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