Face Masks Considerably Reduce COVID-19 Cases in Germany

Face Masks Considerably Reduce COVID-19 Cases in Germany: A Synthetic Control Method Approach – Institute of Labor Economics

Related Commentary on Twitter

New and *powerful* new support for the efficacy of masks
—3-region analysis (NYC, Wuhan, Italy)https://t.co/qUfVKIN6qu @PNASNews
—Synthetic controls, Germanyhttps://t.co/vgYo5f7ER0 via @AdamJKucharski #MasksforAll ? pic.twitter.com/yKC54neNup

— Eric Topol (@EricTopol) June 11, 2020