A new MMWR finds that after Kansas put in place a mask mandate in July 2020 rates of #COVID19 decreased in counties with a mask requirement & increased in counties without one. Wear a mask, stay 6 feet apart from others, & wash your hands often. More: bit.ly/MMWR112020bpic.twitter.com/0SH7FvnMom
Professor of Global Health & Public Policy @DukeU. Director, Center for Policy Impact in Global Health. TIME magazine columnist. DJ @wxdu. Views are my own
Yes, sure, of course, it is not an RCT, but this adds to a huge & growing body of evidence showing masks work.
“After July 3, COVID-19 incidence decreased in 24 counties with mask mandates but continued to increase in 81 counties without mask mandates” cdc.gov/mmwr/volumes/6…