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0 pointselsonrodriguez4y ago0 comments

There are a few cloth masks in this data set showing around 50% filtration of test particles smaller than Sars-Cov-2:

https://docs.google.com/spreadsheets/d/1M0mdNLpTWEGcluK6hh5L...

N95s and similar are obviously better but cloth masks do ok. Also remember they changed guidance to recommend cloth+surgical masks, which everyone laughed at. Lo and behold that combination tests in the 80% filtration range.

So cloth masks work, the guidance for double masking was valid, and the N95 recommendations more valid still.

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gfodor4y ago

I didn't laugh at the double masking guidance, I just laugh at the false equivalencies made across the CDC's guidance that refers to "masks" as though there's not a universe of difference between a re-used, sporadically worn, bacteria filled cloth mask and a clean, properly fit, N95. Total fail.

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