Like the Dutch government concluded, there is no evidence wearing face masks is effective.
The policy of mandatory wearing of face masks is faith based, not science.
Masks alone will not stop COVID19 but are an important tool in reducing transmission. Not sure how many of these have already been posted, as I did not read the whole thread.
- Multi-layer cloth masks block exhaled particles and virus particles. Cloth masks block large droplets and fine droplets... https://pubmed.ncbi.nlm.nih.gov/32709611/
- Multilayer cloth masks block 50-70% of fine droplets and limit forward spread of those that are not captured ...https://arxiv.org/abs/2005.10720
- people infected with SARS COV2 are able to infect others for 2 days prior to symptoms starting, and even when they do not have symptoms. Mask wearing reduces spread by people who are unknowingly contagious... https://www.pnas.org/content/117/30/17513
- masks are also inhalation protection for the wearer. studies demonstrate that cloth masks reduce wearers' exposure to infections droplets through filtration... https://www.liebertpub.com/doi/10.1089/JAMP.2020.1635
- two hairstylists infected with SARS-CoV-2 interacted with 139 clients, none of whom developed infection... Stylists and clients universally wore masks as required by local ordinance... https://pubmed.ncbi.nlm.nih.gov/32673300/
- in a study of 124 Beijing households with >1 lab-confirmed case of infection, mask use by the index patient and family contacts before the development of symptoms reduced in-house transmission by 79%!!!!! ... https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7264640/
- retrospective analysis of >1000 people.... those who reported wearing a mask experienced 70% reduced risk of infection during high risk exposure events compared to those who did not wear masks under the same circumstances. ... https://pubmed.ncbi.nlm.nih.gov/32931726/
(THERE ARE LOTS MORE OF THESE... I won't post them all)
- Data analysis from 200 countries including US demonstrated masks reduce mortality... https://www.ajtmh.org/content/journals/10.4269/ajtmh.20-1015
- Economic analysis with US indicating that increased universal mask wearing by 15% could prevent the need for lockdowns and reduce economic losses by $1 trillion or 5% of GDP.... https://www.goldmansachs.com/insights/pages/face-masks-and-gdp.html
- 89 more studies listed here... https://examine.com/topics/coronavirus-masks/research/
- regarding the danish study referred to by Metal Brain, they looked only at the efficacy of recommending mask usage, not the efficacy of actual usage. The limitation is that the study didn't evaluate participants habits (e.g. indoor dining?) and made no claims on source control. If participants in the study are doing different things, then there are not really any good controls... Other studies show that there is a primary difference between cases and controls when you wear masks vs activities like eating and drinking where you can't wear one. https://www.cdc.gov/mmwr/volumes/69/wr/mm6936a5.htm
Hope this helps clear up some arguments... Cheers.