How much can we reduce the transmission rate with mask?

April 29, 2020 10:05 am by IWB

by swa6211

Home made masks are also good https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7108646/

Full report

https://medium.com/@tomaspueyo/coronavirus-the-basic-dance-steps-everybody-can-follow-b3d216daa343

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