This article has some good links to studies and articles, some math and science.
It also points out you don't even have to science very much, there is lots of anecdotal evidence that shows that in gatherings where masks are worn, transmission is slowed.
Lot's of other factors play into that, but you only have to math a wee tiny bit to realize that properly worn masks can help fewer people be infected, and therefore fewer people will die.
MATH.
This has some nice visualizations based on anecdotal evidence and statistical analysis and compares transmission rates in different settings given the variables of masks wearing vs. no masks and ventilation vs no ventilation, while also taking into account surface based transmission.
https://www.nature.com/articles/d41586-020-02801-8
This article has some good links to studies and articles, some math and science.
It also points out you don't even have to science very much, there is lots of anecdotal evidence that shows that in gatherings where masks are worn, transmission is slowed.
Lot's of other factors play into that, but you only have to math a wee tiny bit to realize that properly worn masks can help fewer people be infected, and therefore fewer people will die.
MATH.
This has some nice visualizations based on anecdotal evidence and statistical analysis and compares transmission rates in different settings given the variables of masks wearing vs. no masks and ventilation vs no ventilation, while also taking into account surface based transmission.
https://english.elpais.com/society/2020-10-28/a-room-a-bar-a...