Yes. In terms of percentage, how less effective are 4 layers of woven fabric in preventing the spread of coronavirus than 4 layers of knitted fabric? Than 2 layers of woven fabric? The idea is to have at least 4 layers of the sock (after folding) or at least 2 layers of other fabric. In preventing breathing in the virus?
However, I’m more inclined to trust Johns Hopkins. But maybe the author of the Johns Hopkins article would have interesting opinions on the above link.
Yes. In terms of percentage, how less effective are 4 layers of woven fabric in preventing the spread of coronavirus than 4 layers of knitted fabric? Than 2 layers of woven fabric? The idea is to have at least 4 layers of the sock (after folding) or at least 2 layers of other fabric. In preventing breathing in the virus?
I have no idea, I already shared my notes above! :) Perhaps the team could reach out to e.g. the author of the Johns Hopkins article?
BTW, I did find this article which argues for knitted masks:
https://stringking.com/face-masks/knit-vs-woven-fabric/
However, I’m more inclined to trust Johns Hopkins. But maybe the author of the Johns Hopkins article would have interesting opinions on the above link.
Edit: Here’s more info
https://med.stanford.edu/news/all-news/2020/06/stanford-scientists-contribute-to-who-mask-guidelines.html
OK, thank you. Added that better fitting masks made of denser material work better.