[BillyMac]

Originally Posted by SNIPERBBB

Name a state or country that has reduced covid by instituting a mask mandate.

I can't, but the American Journal of Preventive Medicine can:

https://medicalxpress.com/news/2021-...on-covid-.html

Twenty-seven countries with face mask policies and 17 countries without face mask policies, covering a combined population of nearly one billion people, were included in the study ... The top 50 countries according to the United Nations Development Programme Human Development Index, which measures life expectancy, education, and standard of living, were targeted because of comparability and reduced chance of selection bias. Four countries in the Southern Hemisphere (New Zealand, Australia, Chile, and Argentina) were excluded to avoid potential seasonality characteristics. The United States and Canada were excluded because their public health policies are made at the state/province level and a unified national policy does not exist in those nations. Data from the remaining 44 countries were used to model COVID-19 mortality ... A study of the impact of national face mask laws on COVID-19 mortality in 44 countries with a combined population of nearly one billion people found that over time, the increase in COVID-19 related deaths was significantly slower in countries that imposed mask laws compared to countries that did not. The study, appearing in the American Journal of Preventive Medicine, published by Elsevier, shows that masks provide a supplementary layer of protection that could prevent unnecessary COVID-19 deaths.