5 ms·
No one honest can, because masks do help. What's not clear is how much they help. They'd have a huge effect on large droplets, but potentially a very small effe
by wegs 6y ago
No one honest can, because masks do help. What's not clear is how much they help. They'd have a huge effect on large droplets, but potentially a very small effect on bioaerosols. Until we know more about how COVID19 typically spreads, we don't know how important they are.
In contrast to the intentionally dishonest UMN fluff PR piece, that's what the NAP paper it claims to summarize says.
The one really big effect not talked about is that it also means I can't unconsciously touch my mouth or nose. Remember the "don't touch your face" campaign?
- timr 6y ago"In contrast to the intentionally dishonest UMN fluff PR piece, that's what the NAP paper it claims to summarize says." The article title is "data do not back cloth masks to limit Covid-19". The NAP paper says: "The evidence from these laboratory filtration studies suggests that such fabric masks may reduce the transmission of larger respiratory droplets. There is little evidence regarding the transmission of small aerosolized particulates of the size potentially exhaled by asymptomatic or presymptomatic individuals with COVID-19. The extent of any protection will depend on how the masks are made and used. It will also depend on how mask use affects users’ other precautionary behaviors, including their use of better masks, when those become widely available. Those behavioral effects may undermine or enhance homemade fabric masks’ overall effect on public health. The current level of benefit, if any, is not possible to assess." It seems like an entirely accurate summary of the contents of the paper.