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User Info Science Catches Up -- And Burns You All; entered at 2021-04-29 06:33:49
Mannfm11
Posts: 7551
Registered: 2009-02-28 DFW, Tx
Winesorbet Posted this link backing masks

https://www.pnas.org/content/118/4/e2014....

Quote:
Only one observational study has directly analyzed the impact of mask use in the community on COVID-19 transmission. The study looked at the reduction of secondary transmission of SARS-CoV-2 in Beijing households by face mask use (10). It found that face masks were 79% effective in preventing transmission, if they were used by all household members prior to symptoms occurring. The study did not look at the relative risk of different types of mask.


Now, what did Karl post from that study? That around 80% of people had natural immunity?

Why does the flu seem to arise out of the part of the world that wears so many masks, if they are so effective?
2021-04-29 06:33:49