1/Just updated scientific brief on community use of cloth masks to control the spread of #COVID19 from @CDCgov: cdc.gov/coronavirus/20…
2/Important: "Masks also help reduce inhalation of these droplets by the wearer (“filtration for personal protection”)."
Previous data focused on reducing spread by an infected person (i.e., 'source control').
Previous data focused on reducing spread by an infected person (i.e., 'source control').
3/How?
"Studies demonstrate that cloth mask materials can also reduce wearers’ exposure to infectious droplets through filtration, including filtration of fine droplets and particles less than 10 microns."
"Studies demonstrate that cloth mask materials can also reduce wearers’ exposure to infectious droplets through filtration, including filtration of fine droplets and particles less than 10 microns."
4/Population level findings?
"Seven studies have confirmed the benefit of universal masking in community level analyses: in a unified hospital system, a German city, a U.S. state, a panel of 15 U.S. states and Washington, D.C., as well as both Canada and the U.S. nationally."
"Seven studies have confirmed the benefit of universal masking in community level analyses: in a unified hospital system, a German city, a U.S. state, a panel of 15 U.S. states and Washington, D.C., as well as both Canada and the U.S. nationally."
5/What are the economic implications?
"An economic analysis using U.S. data found that, given these effects, increasing universal masking by 15% could prevent the need for lockdowns and reduce associated losses of up to $1 trillion or about 5% of gross domestic product."
"An economic analysis using U.S. data found that, given these effects, increasing universal masking by 15% could prevent the need for lockdowns and reduce associated losses of up to $1 trillion or about 5% of gross domestic product."
6/Bottom line: Experimental and epidemiological data support widespread masking to reduce the spread of #COVID19.
#DoTheRightThing
#DoTheRightThing
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