Home-made face masks likely need at least 2 layers to curb COVID-19 spread

https://www.eurekalert.org/pub_releases/2020-07/b-hfm072220.php

News Release 23-Jul-2020
BMJ


Home-made cloth face masks likely need a minimum of two layers, and preferably three, to prevent the dispersal of viral droplets from the nose and mouth that are associated with the spread of COVID-19, indicates a video case study published online in the journal Thorax.

Viral droplets are generated during coughing, sneezing, or speaking. And face masks are thought to protect healthy people from inhaling infectious droplets as well as reducing the spread from those who are already infected.

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