Aren't masks mostly/also about decreasing the area of the air that you pull in (closer to you, or in other words the distance from which you pull is smaller)? like take a piece of paper in front of your face and breath with mask and without
Face masks effectively limit the probability of SARS-CoV-2 transmission
21–30 of 387 posts
Re: Face masks effectively limit the probability of SARS-CoV-2 transmission
#22This isn't a study; it is a mathematical model [1].
> Here, we develop a quantitative model of airborne virus exposure that can explain these contrasting results and provide a basis for quantifying the efficacy of face masks. We show that mask efficacy strongly depends on airborne virus abundance. Based on direct measurements of SARS-CoV-2 in air samples and population-level infection probabilities, we find that the virus abundance in most environments is sufficiently low for masks to be effective in reducing airborne transmission.
Meanwhile, they ignore the dozens of studies showing masks are ineffective, or even counterproductive:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/
https://pubmed.ncbi.nlm.nih.gov/29395560/
https://pubmed.ncbi.nlm.nih.gov/32590322/
https://pubmed.ncbi.nlm.nih.gov/15340662/
https://pubmed.ncbi.nlm.nih.gov/26579222/
https://pubmed.ncbi.nlm.nih.gov/31159777/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5779801/
https://pubmed.ncbi.nlm.nih.gov/19216002/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2493952/pdf/ann...
https://www.nap.edu/catalog/25776/rapid-expert-consultation-...
https://www.nap.edu/read/25776/chapter/1#6
https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6599448/
https://www.acpjournals.org/doi/10.7326/M20-1342
https://link.springer.com/article/10.1007/s00392-020-01704-y
Re: Face masks effectively limit the probability of SARS-CoV-2 transmission
#23Not that this will settle anything. Anecdotally, I've not gotten even a slight cold while being socially distanced while consistently masked.
It's not just an anecdote, it's measurable on a global scale [0]
Re: Face masks effectively limit the probability of SARS-CoV-2 transmission
#24N95/FFP2 seem to be very effective. I wish the media and government would have spent more time in educating people in things like how N95 masks work and that it isn't like a coffee filter. Even thought the pores are larger than a virus the masks are statically charged causes smaller things to get trapped. Many people don't know this but probably had an interaction with static electricity sometime in school and would…
I’m not sure there was any popular doubt over the efficacy of N95 masks. The problem was rather getting one - marketplaces like Amazon restricted access to masks if you weren’t affiliated with a hospital. So you were left with sketchy deals and weird vendor sites.
I suspect Amazon killed quite a few people over the last year by restricting access - supply scaled pretty quickly.
Re: Face masks effectively limit the probability of SARS-CoV-2 transmission
#25Results only apply to indoor environment. Maybe source control could be extrapolated to outdoor conditions and close contact.
Re: Face masks effectively limit the probability of SARS-CoV-2 transmission
#26Even if this is true, I still don’t think someone at high risk should be trusting their life to a piece of cloth.
Re: Face masks effectively limit the probability of SARS-CoV-2 transmission
#27"This is an open-access article distributed under the terms of the Creative Commons Attribution license, which permits unrestricted use, distribution, and reproduction in
any medium, provided the original work is properly cited."
So happy to see that.
Re: Face masks effectively limit the probability of SARS-CoV-2 transmission
#28Not that this will settle anything. Anecdotally, I've not gotten even a slight cold while being socially distanced while consistently masked.
Anecdotally I haven't had a cold in years. I work out 4 days a week and while I wouldn't call it a strict diet I have an upper limit calorie "budget" that I never exceed. While it's certainly possible that masks helped some people avoid all airborne transmissions last year, lots of people were also able to exercise more and make better food choices without the rush of breakfast and lunch commutes.
Re: Face masks effectively limit the probability of SARS-CoV-2 transmission
#29Not that this will settle anything. Anecdotally, I've not gotten even a slight cold while being socially distanced while consistently masked.
anecdotally, I have very little social contact normally anyway, I've worked from home since before winter, and always wear masks in closed public spaces - have had 3-4 colds in that time. I do have kids though.
Anecdotally, since taking vitamin D3 supplements I haven't been getting colds. Added daily nutritional zinc supplements in 2020 as soon as they were available after I heard the anecdotal evidence D & zinc are effective in Covid prevention. Throughout winter and early spring last year you couldn't get zinc supplements for love or money.
A lot of anecdotes there :).
The American medical establishment has a long history of not getting behind nutritional disease prevention. Some of it is for good reason, but I think there is also a systemic bias.
Re: Face masks effectively limit the probability of SARS-CoV-2 transmission
#30Have any studies been completed yet on immune system efficiency/suppression after covid restrictions (masks, hand sanitizer etc) ? In Australia we were very lucky with the COVID situation. And purely annecdotal, but I know many people who haven't been sick at all during the pandemic. But as we approach winter here and perhaps no longer hand sanitize appropriately, many of these people are becoming "the most unwell [t…
protip: shower once a month to train your immune system during lockdown