[seastay]

Except “ group. Penetration of cloth masks by particles was almost 97%...., cloth masks should not be recommended for HCWs, particularly in high-risk situations, and guideline”. According to one study

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/

[21twelve]

https://www.ncbi.nlm.nih.gov/pubmed/28039289

This is another article on the sidebar of the page you posted. Your’s was on use of cheap masks protecting workers.

The WHO’s (and others) argument is that a cheap mask on the sick person will help prevent the spread. The study I posted has the sick people wearing the mask, but also shows dismal results when it comes to the flu.

Excerpt:

RESULTS:

In an intention-to-treat analysis, rates of clinical respiratory illness (relative risk (RR) 0.61, 95% CI 0.18 to 2.13), ILI (RR 0.32, 95% CI 0.03 to 3.13) and laboratory-confirmed viral infections (RR 0.97, 95% CI 0.06 to 15.54) were consistently lower in the mask arm compared with control, although not statistically significant.

A post hoc comparison between the mask versus no-mask groups showed a protective effect against clinical respiratory illness, but not against ILI [influenza-like illness] and laboratory-confirmed viral respiratory infections.

I have no idea what a “clinical respiratory illness” is or how it is different than the flu.

But it sounds like the cheap masks really don’t do any good.

Seems like the expert advice on wearing cheap masks is based on “Don’t just stand there - do SOMETHING!”

[Drago]

Yep, Dr. Adams a little over one month ago: “...(masks) are NOT effective in preventing general public from catching #Coronavirus”. —Dr. Jerome Adams, Surgeon General, Feb. 29, 2020

https://twitter.com/Surgeon_General/status/1233725785283932160

Kind of ironic that he is making mask-making videos now.