[psahgal]

I found your point of view interesting, so I did some research. I found this meta analysis in favor of masks that had a lot of good sources: https://www.pnas.org/content/118/4/e2014564118. A few highlights:

- There aren't any good randomized controlled trials to tell how well mask wearing works due to ethical concerns of experimenting on pandemic prevention methods. I could see why researchers would be reluctant to force people NOT to wear masks during a pandemic, since there's a good chance they could be putting people in danger.

- Several studies found that wearing masks are effective at reducing transmission of other respiratory illnesses, so I could see why the CDC issued guidance on wearing masks when faced with a respiratory illness like COVID-19.

- There's also randomized controlled trials referenced in the analysis that suggest masks are effective at reducing the occurrence of influenza-like illness.

I'm looking for studies that suggest face masks are ineffective, but I'm not finding a whole lot...I found a few websites claiming that masks were ineffective, but upon closer inspection, the studies they were citing compared N95 masks to standard surgical masks, not masks vs. no masks. I would love to read any studies you find suggesting that masks are ineffective at reducing the transmission of respiratory illnesses!