Study: A good cloth mask is a powerful weapon against the coronavirus
WASHINGTON — Face coverings, including masks made of cloth, are highly effective in protecting the people who wear them as well as those around them, according to a new study from Linsey Marr, a leading aerosol scientist at Virginia Tech University. “Filtration works both ways,” Marr said. “If it works for source control,” she said during a media presentation on Monday — that is, if the mask filters out particles coming from the wearer’s mouth — “it’s going to work pretty well for exposure reduction to protect the wearer also.” Testing 11 ...
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