Scientific Brief: Community Use of Cloth Masks to Control the Spread of SARS-CoV-2 | CDC
https://www.cdc.gov/coronavirus/2019-ncov/more/masking-science-sars-cov2.html?ACSTrackingID=USCDC_1052-DM42364&ACSTrackingLabel=COCA%20Now%3A%20Scientific%20Brief%3A%20Community%20Use%20of%20Cloth%20Masks%20to%20Control%20Spread%20of%20SARS-CoV-2%20&deliveryName=USCDC_1052-DM42364