by A lab experiment which used mechanical mannequins to test the efficacy of face masks in reducing the spread of large droplets when coughing and speaking has found that they can block 99.9 percent of drops when worn properly. The findings were published in the journal Royal Society Open Science Mask Wearing Is 99.9 Percent Effective At Retaining Large Droplets When Worn Properly, Study Finds
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A lab experiment which used mechanical mannequins to test the efficacy of face masks in reducing the spread of large droplets when coughing and speaking has found that they can block 99.9 percent of drops when worn properly. The findings were published in the journal Royal Society Open Science
Mask Wearing Is 99.9 Percent Effective At Retaining Large Droplets When Worn Properly, Study Finds