Trends in COVID-19 incidence in counties with and without a mask mandate. Counties with mask mandates saw a decrease in cases compared to counties that didn’t

Trends in County-Level COVID-19 Incidence in Counties With and Without a Mask Mandate — Kansas, June 1–August 23, 2020 – CDC Morbidity and Mortality Weekly Report

Commentaries: A new CDC report found that Kansas counties who complied with a mask mandate saw a decrease in cases compared to counties that didn’t – Business Insider AND Masks mandates worked to slow the spread of Covid-19 in Kansas, CDC research shows – CNN

Commentary on Twitter

New @CDCMMWR 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: https://t.co/kSgJxDhZUq. pic.twitter.com/w85jEQ8Fv9

— CDC (@CDCgov) November 20, 2020