Do Masks Work?

[EvMetro]

And those aerosols drop to the floor after just a few minutes...INSTEAD of shooting out 6 to 12 feet in front of them

Oh and it's amazing how well that chain link fence prevents even smoke from going through it

Droplets evaporate and the nuclei float away long before your few minutes. I'm glad to see that you understand how masks work though. There are no substitutes or studies that can over ride how masks work out in the real world.

 

[jc456]

Seems I'm not the one feeling the need to use middle-school racist taunts.
And we all know the heart of racism is fear.

Me either! Thanks

 

[jc456]

Droplets evaporate and the nuclei float away long before your few minutes. I'm glad to see that you understand how masks work though. There are no substitutes or studies that can over ride how masks work out in the real world.

Why do the manufacturers print doesn’t protect against Covid 19?

 

[EvMetro]

Why do the manufacturers print doesn’t protect against Covid 19?

The way it works in places where we work with hazmat is we have to look up each specific hazmat and select the correct NIOSH approved mask or cartridge for it, and we refer to the msds sheet for all the safety info.

 

[Lesh]

Studies demonstrate that cloth mask materials can also reduce wearers’ exposure to infectious droplets through filtration, including filtration of fine droplets and particles less than 10 microns. The relative filtration effectiveness of various masks has varied widely across studies, in large part due to variation in experimental design and particle sizes analyzed. Multiple layers of cloth with higher thread counts have demonstrated superior performance compared to single layers of cloth with lower thread counts, in some cases filtering nearly 50% of fine particles less than 1 micron .14,17-29 Some materials (e.g., polypropylene) may enhance filtering effectiveness by generating triboelectric charge (a form of static electricity) that enhances capture of charged particles18,30 while others (e.g., silk) may help repel moist droplets31 and reduce fabric wetting and thus maintain breathability and comfort. In addition to the number of layers and choice of materials, other techniques can improve wearer protection by improving fit and thereby filtration capacity. Examples include but are not limited to mask fitters, knotting-and-tucking the ear loops of medical procedures masks, using a cloth mask placed over a medical procedure mask, and nylon hosiery sleeves.31-35

 

[jc456]

Studies demonstrate that cloth mask materials can also reduce wearers’ exposure to infectious droplets through filtration, including filtration of fine droplets and particles less than 10 microns. The relative filtration effectiveness of various masks has varied widely across studies, in large part due to variation in experimental design and particle sizes analyzed. Multiple layers of cloth with higher thread counts have demonstrated superior performance compared to single layers of cloth with lower thread counts, in some cases filtering nearly 50% of fine particles less than 1 micron .14,17-29 Some materials (e.g., polypropylene) may enhance filtering effectiveness by generating triboelectric charge (a form of static electricity) that enhances capture of charged particles18,30 while others (e.g., silk) may help repel moist droplets31 and reduce fabric wetting and thus maintain breathability and comfort. In addition to the number of layers and choice of materials, other techniques can improve wearer protection by improving fit and thereby filtration capacity. Examples include but are not limited to mask fitters, knotting-and-tucking the ear loops of medical procedures masks, using a cloth mask placed over a medical procedure mask, and nylon hosiery sleeves.31-35

show us those studies. Anyone can say anything without proof.

 

[Lesh]

show us those studies. Anyone can say anything without proof.

They've been shown to you six times on this thread and you've ignored them six times.

 

[ColonelAngus]

MASKS WORK!

That why the virus DID NOT SPREAD in mask mandated municipalities.


Fucking toolbag lefty commie cucks are so stupid.

My favorite from you asslickers is when the vaccinated get COVID….YOU CLAIM IT IS NOT PROOF THE VACCINE DOES NOT WORK.

Hey, cucks…how are you so fucking stupid?

 

[Lesh]

That why the virus DID NOT SPREAD in mask mandated municipalities

Masks are not 100% protection but in municipalities (and states/regions) where masks and vaccinations are the norm...the spread has been far less

 

[WTH_Progs?]

Of course fuck they don't work. They're only a way to dumb down and control people so they'll voted Demonicrats & Communists, which have really become one in the same.

 

[sartre play]

Nothing is 100% I look around and see the majority of the medical profession encouraging wearing masks or flat out requiring wearing when in there facility's. I see increases in those who use no protection getting and passing the virus to others. Having no medical degrees I prefer to side with caring about doing anything that has the possibility of not getting or giving the virus to my self or anyone else.

 

[kaz]

Human Studies of Masking and SARS-CoV-2 Transmission​

Data regarding the “real-world” effectiveness of community masking are limited to observational and epidemiological studies.

• An investigation of a high-exposure event, in which 2 symptomatically ill hair stylists interacted for an average of 15 minutes with each of 139 clients during an 8-day period, found that none of the 67 clients who subsequently consented to an interview and testing developed infection. The stylists and all clients universally wore masks in the salon as required by local ordinance and company policy at the time.36
• In a study of 124 Beijing households with > 1 laboratory-confirmed case of SARS-CoV-2 infection, mask use by the index patient and family contacts before the index patient developed symptoms reduced secondary transmission within the households by 79%.37
• A retrospective case-control study from Thailand documented that, among more than 1,000 persons interviewed as part of contact tracing investigations, those who reported having always worn a mask during high-risk exposures experienced a greater than 70% reduced risk of acquiring infection compared with persons who did not wear masks under these circumstances.38
• A study of an outbreak aboard the USS Theodore Roosevelt, an environment notable for congregate living quarters and close working environments, found that use of face coverings on-board was associated with a 70% reduced risk.39
• Investigations involving infected passengers aboard flights longer than 10 hours strongly suggest that masking prevented in-flight transmissions, as demonstrated by the absence of infection developing in other passengers and crew in the 14 days following exposure.40,41

At least ten studies have confirmed the benefit of universal masking in community level analyses: in a unified hospital system,42 a German city,43 two U.S. states,44, 45 a panel of 15 U.S. states and Washington, D.C.,46, 47 as well as both Canada48 and the U.S. 49-51 nationally. Each analysis demonstrated that, following directives from organizational and political leadership for universal masking, new infections fell significantly. Two of these studies46, 47 and an additional analysis of data from 200 countries that included the U.S.51 also demonstrated reductions in mortality. Another 10-site study showed reductions in hospitalization growth rates following mask mandate implementation 49. A separate series of cross-sectional surveys in the U.S. suggested that a 10% increase in self-reported mask wearing tripled the likelihood of stopping community transmission.53 An economic analysis using U.S. data found that, given these effects, increasing universal masking by 15% could prevent the need for lockdowns and reduce associated losses of up to $1 trillion or about 5% of gross domestic product.47

First go to example, two people. And they didn't even study them, they investigated later.

Wow you are making the point to stop the mandates you're so desperate

 

[Lesh]

CDC

Studies demonstrate that cloth mask materials can also reduce wearers’ exposure to infectious droplets through filtration, including filtration of fine droplets and particles less than 10 microns. The relative filtration effectiveness of various masks has varied widely across studies, in large part due to variation in experimental design and particle sizes analyzed. Multiple layers of cloth with higher thread counts have demonstrated superior performance compared to single layers of cloth with lower thread counts, in some cases filtering nearly 50% of fine particles less than 1 micron .14,17-29 Some materials (e.g., polypropylene) may enhance filtering effectiveness by generating triboelectric charge (a form of static electricity) that enhances capture of charged particles18,30 while others (e.g., silk) may help repel moist droplets31 and reduce fabric wetting and thus maintain breathability and comfort. In addition to the number of layers and choice of materials, other techniques can improve wearer protection by improving fit and thereby filtration capacity. Examples include but are not limited to mask fitters, knotting-and-tucking the ear loops of medical procedures masks, using a cloth mask placed over a medical procedure mask, and nylon hosiery sleeves.31-35

 

[Lesh]

Human Studies of Masking and SARS-CoV-2 Transmission​

Data regarding the “real-world” effectiveness of community masking are limited to observational and epidemiological studies.

• An investigation of a high-exposure event, in which 2 symptomatically ill hair stylists interacted for an average of 15 minutes with each of 139 clients during an 8-day period, found that none of the 67 clients who subsequently consented to an interview and testing developed infection. The stylists and all clients universally wore masks in the salon as required by local ordinance and company policy at the time.36
• In a study of 124 Beijing households with > 1 laboratory-confirmed case of SARS-CoV-2 infection, mask use by the index patient and family contacts before the index patient developed symptoms reduced secondary transmission within the households by 79%.37
• A retrospective case-control study from Thailand documented that, among more than 1,000 persons interviewed as part of contact tracing investigations, those who reported having always worn a mask during high-risk exposures experienced a greater than 70% reduced risk of acquiring infection compared with persons who did not wear masks under these circumstances.38
• A study of an outbreak aboard the USS Theodore Roosevelt, an environment notable for congregate living quarters and close working environments, found that use of face coverings on-board was associated with a 70% reduced risk.39
• Investigations involving infected passengers aboard flights longer than 10 hours strongly suggest that masking prevented in-flight transmissions, as demonstrated by the absence of infection developing in other passengers and crew in the 14 days following exposure.40,41

At least ten studies have confirmed the benefit of universal masking in community level analyses: in a unified hospital system,42 a German city,43 two U.S. states,44, 45 a panel of 15 U.S. states and Washington, D.C.,46, 47 as well as both Canada48 and the U.S. 49-51 nationally. Each analysis demonstrated that, following directives from organizational and political leadership for universal masking, new infections fell significantly. Two of these studies46, 47 and an additional analysis of data from 200 countries that included the U.S.51 also demonstrated reductions in mortality. Another 10-site study showed reductions in hospitalization growth rates following mask mandate implementation 49. A separate series of cross-sectional surveys in the U.S. suggested that a 10% increase in self-reported mask wearing tripled the likelihood of stopping community transmission.53 An economic analysis using U.S. data found that, given these effects, increasing universal masking by 15% could prevent the need for lockdowns and reduce associated losses of up to $1 trillion or about 5% of gross domestic product.47

 

[Fueri]

An RCT study just done out of Bangladesh by multiple universities. 600,000 participants.

Results

Cloth - Zero effect
Surgical Masks - Some minor effect in those over 50 years old.

I'll link it as soon as I can find a clean link

ETA: Correction ~ 300,000 participants

 

[ColonelAngus]

When a vaccinated person gets COVID…the left say it is a lie.

 

[Lesh]

An RCT study just done out of Bangladesh by multiple universities. 600,000 participants.

Results

Cloth - Zero effect
Surgical Masks - Some minor effect in those over 50 years old.

I'll link it as soon as I can find a clean link

ETA: Correction ~ 300,000 participants

Bangladesh… CDC

I’m going with the CDC

 

[Fueri]

Bangladesh… CDC

I’m going with the CDC

Translation: I'll believe what I want even though a large scale RCT by notable universities is far superior than any of this other garbage I'm presenting as 'studies'

And, BTW, the CDC found no statistically significant difference between mask optional and mask mandated schools. Ventilation made the most difference in that scenario.

Now, if we were to think about this and actually discuss it in a rational fashion I think we'd see some similarities to these results and maybe develop a better understanding of what we're all dealing with for literally the rest of our lives; or some of us can just cling to our safety blankets like Linus.....

 

[Fueri]

These results are also in keeping with other information on mask types, such as this one, which is a pretty good article on the subject. and cites another study on this specific question.

Masks are NOT source control

Megan Mansell explains why masks are inappropriate as source control for COVID-19

rationalground.com

"Cloth masks have been shown to have 97% particle penetration, with 44% for surgical masks."

A cluster randomised trial of cloth masks compared with medical masks in healthcare workers

The aim of this study was to compare the efficacy of cloth masks to medical masks in hospital healthcare workers (HCWs). The null hypothesis is that there is no difference between medical masks and cloth masks.14 secondary-level/tertiary-level hospitals ...

www.ncbi.nlm.nih.gov

 

[Dadoalex]

Me either! Thanks

Good.
Then, perhaps you understand the need to rephrase your racist question?