Are Face Masks Effective?
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/
"Face mask use in health care workers has not been demonstrated to provide benefit in terms of cold symptoms or getting colds. A larger study is needed to definitively establish noninferiority of no mask use"
https://pubmed.ncbi.nlm.nih.gov/19216002/
There is very little data showing that masks can
Help prevent infection
https://www.cambridge.org/core/journals/epidemiology-and-infection/article/face-masks-to-prevent-transmission-of-influenza-virus-a-systematic-review/64D368496EBDE0AFCC6639CCC9D8BC05
https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1750-2659.2011.00307.x
"We identified 6 clinical studies (3 RCTs, 1 cohort study and 2 case–control studies) and 23 surrogate exposure studies. In the meta-analysis of the clinical studies, we found no significant difference between N95 respirators and surgical masks in associated risk of (a) laboratory-confirmed respiratory infection"
https://www.cmaj.ca/content/188/8/567
"We know that wearing a mask outside health care facilities offers little, if any, protection from infection. They also go on to say "It is also clear that masks serve symbolic roles. Masks are not only tools, they are also talismans that may help increase health care workers’ perceived sense of safety, well-being, and trust in their hospitals."
https://www.nejm.org/doi/full/10.1056/NEJMp2006372?rfr_dat=cr_pub%3dpubmed
https://academic.oup.com/cid/article/65/11/1934/4068747
https://jamanetwork.com/journals/jama/fullarticle/2749214
https://onlinelibrary.wiley.com/doi/epdf/10.1111/jebm.12381
https://www.acpjournals.org/doi/10.7326/M20-6817
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7323223/
Dr Fauci on Masks
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