face CDC 5/MAY/2020 Face mask "In pooled analysis, we found

CDC 5/MAY/2020 Face mask "In pooled analysis, we found no significant reduction in influenza transmission with the use of face masks"

- 3 years ago

https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article?fbclid=IwAR0Tt4GyGrfLox3zlsidxEQB5tlA6Yrl-CChUzeBUMTqV8X5f08xXLKQtrI