How effective is your mask of choice? A new study ranks masks by how well they block the spread of salivary droplets.
But bandanas and neck fleeces like balaclavas didn't block"This was just a demonstration -- more work is required to investigate variations in masks, speakers, and how people wear them," Fischer said in a university news release. He added it demonstrates that businesses and others that are providing masks to employees or patrons could do similar testing.
"If everyone wore a mask, we could stop up to 99% of these droplets before they reach someone else," said Dr. Eric Westman, an associate professor of medicine at Duke."In the absence of aThe report was published online Aug. 7 in the journal
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