Quote:
Originally Posted by Klen
Masks do work but there is several culprits which make them almost useless:
2. Most of people wear only cotton mask which offer almost zero protection.
use.
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Of course NOT as good as N95 , but most cotton masks are double or tripple layered and since the virus is carried in droplets the likelihood that it penetrates the mask is not very high.
Source:
https://wwwnc.cdc.gov/eid/article/26/10/20-0948_article