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Face masks effectively limit the probability of SARS-CoV-2 transmission

science.sciencemag.org

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Re: Face masks effectively limit the probability of SARS-CoV-2 transmission

#11
post #9

Not that this will settle anything. Anecdotally, I've not gotten even a slight cold while being socially distanced while consistently masked.

My 2yo would like to sneeze on you and flip that anecdote on its head.

Parent of a 1.5 year old here. Can confirm - several colds.

To the parent comment's point though, I haven’t had any colds in the last year where my daughter wasn’t sick first

Re: Face masks effectively limit the probability of SARS-CoV-2 transmission

#12
post #9

Not that this will settle anything. Anecdotally, I've not gotten even a slight cold while being socially distanced while consistently masked.

My 2yo would like to sneeze on you and flip that anecdote on its head.

Years ago my entire family got sick and I was determined not to contract it through distancing and frequent hand washing and sanitizing. It worked until I bent down to tie my toddler’s shoes only to look up and mid-sentence have him cough directly into my open mouth. All it takes is one mistake. Needless to say I got sick shortly after.

Re: Face masks effectively limit the probability of SARS-CoV-2 transmission

#13

>Surgical masks with particle collection efficiencies around ~50% cannot prevent the release of millions of particles per person and their inhalation by others (green dots in Fig. 1, B and D). In other words, the human-emitted respiratory particle number is so high that we cannot avoid inhaling particles generated by another person even when wearing a surgical mask So the entire premise of the modeling in the paper r…

Science is based a lot on assumptions and beliefs. A scientist who does not consciously say: „We have observed that… which makes us believe that…“ still ultimately becomes a victim of his unconsciously formed belief system, a pseudo-religion.

I’m a software engineer, I work scientifically, but I don’t own the truth. I own the thought process which works on top of assumptions. But I don’t want my own work to feel like magic, and to avoid that, I observe and try to understand it. But at the end of the day I have to say: „I assume that my program is bug free because I have observed many test runs in which the program behaved correctly. I belief it will work well at the customer.

Same has to be said for above study. Otherwise we wouldn’t find studies which even claim the opposite. These other studies are just based on different assumptions and belief systems.

Re: Face masks effectively limit the probability of SARS-CoV-2 transmission

#14

Not 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.

My frequency of colds has increased 10x since I've gotten married and had kids.

Re: Face masks effectively limit the probability of SARS-CoV-2 transmission

#16
Have 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 [they] have been in years".

Re: Face masks effectively limit the probability of SARS-CoV-2 transmission

#17
N95/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 understand it if someone explained it. Instead people get put in a bucket and no dialog is possible.

Education is key to understanding. You can't reach everyone most.

Re: Face masks effectively limit the probability of SARS-CoV-2 transmission

#18
Whole study is flawed. This is theoretical math philosophy, not a study. A viral particle has never been isolated outside its host, therefore these authors have no idea of the viral concentration in an airborne particle and are just making stuff up.

Re: Face masks effectively limit the probability of SARS-CoV-2 transmission

#19

>Surgical masks with particle collection efficiencies around ~50% cannot prevent the release of millions of particles per person and their inhalation by others (green dots in Fig. 1, B and D). In other words, the human-emitted respiratory particle number is so high that we cannot avoid inhaling particles generated by another person even when wearing a surgical mask So the entire premise of the modeling in the paper r…

Here’s a nice interactive graphic showing how masks block particles:

https://www.nytimes.com/interactive/2020/10/30/science/wear-...

Re: Face masks effectively limit the probability of SARS-CoV-2 transmission

#20

N95/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…

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