A 2020 mask mandate study used by the CDC to inform masking policy is scrutinized for flawed methodology and cherry-picked data on COVID-19.
https://www.foxnews.com/outkick-analysis/prominent-pro-mask-mandate-studies-covid-pandemic-misleading-failure
https://www.foxnews.com/outkick-analysis/prominent-pro-mask-mandate-studies-covid-pandemic-misleading-failure