We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

   PoliticsFormerly About Advanced Micro Devices

Previous 10 Next 10 
To: i-node who wrote (1278611)11/15/2020 1:27:07 PM
From: Wharf Rat
4 Recommendations   of 1371346
"Let's be serious. You know these masks do nothing."
OK, serious it is; you don't know shit from shinola.In an entirely unrelated matter,

'Two-way street': CDC report says masks protect wearers and everyone else

Wearing a mask not only protects others from the spread of Covid-19, but it protects the wearer as well, the Centers for Disease Control and Prevention said Tuesday in its strongest messaging yet on face coverings.

The CDC also said that "adopting universal masking policies can help avert future lockdowns," particularly when combined with a doubling down of mitigation strategies available to virtually every American: physical distancing, hand washing and ventilation.

Full coverage of the coronavirus outbreak

SARS-CoV-2, the virus that causes Covid-19, spreads mainly through respiratory droplets, especially when people are coughing, sneezing, singing, talking or even breathing. Infectious disease experts have long said that when one person covers his or her mouth and nose, it protects those who are nearby. The CDC report estimated that more than 50 percent of transmissions originate from asymptomatic people, or those who have been infected but have not yet developed symptoms.

When the CDC first urged Americans to wear face coverings in public in spring, the guidance was that it protected others. But there is growing evidence that a mask can also give protection to the person wearing it.

"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 report's authors wrote.

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Disease, agreed that it is increasingly clear that the benefit of wearing masks is a "two-way street."

"Recent data has now shown that as a matter of fact, there's also the added benefit to protect you from droplets and virus that's coming your way," Fauci said Tuesday on MSNBC's "Andrea Mitchell Reports."

"You protect others," he said. "Their masks protect you. And your mask also protects you."

Download the NBC News app for full coverage of the coronavirus outbreak

There's been hesitation to say that masks provide that benefit, "not because it doesn't protect the wearer so much as because the exact degree to which it protects the wearer isn't as clear," said Dr. John O'Horo, an infectious disease specialist at the Mayo Clinic in Rochester, Minnesota.

But O'Horo added that it is logical to assume that masks can indeed protect against inhaling larger droplets; it's a reason why health care workers routinely wear masks.

Infectious disease doctors who have urged the CDC to change the messaging around masks believe it will be a more effective public health strategy. "I'm thrilled that it's happening now," said Dr. Monica Gandhi, professor of medicine at the University of California San Francisco. "I think it helps people comply with the regulation if they think it's helping them."

The new report comes amid a growing push to require mask use. President-elect Joe Biden has implored all Americans to cover their faces as a way to slow the spread of Covid-19. The Infectious Diseases Society of America tweeted praise for Utah's governor for issuing a mask mandate, and urged "all governors who have not yet enacted mask mandates to do so."

And beginning Wednesday, all Iowans over age 2 are being urged to wear masks when gathering indoors with at least 25 people.

The CDC report also highlighted an economic analysis from Goldman Sachs released in June that found "increasing universal masking by 15 percent could prevent the need for lockdowns and reduce associated losses of up to $1 trillion or about 5 percent of gross domestic product."

Which masks are most effective?The type of mask appears to make a difference. "Try to get at least a two-ply cloth mask," O'Horo said, "and make sure it's tightly woven."

Dr. Scott Segal, chair of anesthesiology at Wake Forest Baptist Health in Winston-Salem, North Carolina, agreed that fabric quality matters.

One test is to hold a mask up to a light. Segal suggested passing on masks that allow the light to outline individual fibers in the cloth.

Segal partnered with the Wake Forest Institute for Regenerative Medicine to test a variety of cloth materials to see which ones not only allowed for breathability, but also filtered small particles. The team previously found that the best ma sks were constructed of two layers of heavyweight "quilters cotton" with a thread count of at least 180.

"If you’re going to wear a mask, you might as well wear one that offers as much protection as possible," Segal said.

Share RecommendKeepReplyMark as Last ReadRead Replies (3)

To: Wharf Rat who wrote (1278612)11/15/2020 1:28:41 PM
From: Wharf Rat
3 Recommendations   of 1371346
The report...

Scientific Brief: Community Use of Cloth Masks to Control the Spread of SARS-CoV-2

Updated Nov. 10, 2020

BackgroundSARS-CoV-2 infection is transmitted predominately by respiratory droplets generated when people cough, sneeze, sing, talk, or breathe. CDC recommends community use of masks, specifically non-valved multi-layer cloth masks, to prevent transmission of SARS-CoV-2. Masks are primarily intended to reduce the emission of virus-laden droplets (“source control”), which is especially relevant for asymptomatic or presymptomatic infected wearers who feel well and may be unaware of their infectiousness to others, and who are estimated to account for more than 50% of transmissions.1,2 Masks also help reduce inhalation of these droplets by the wearer (“filtration for personal protection”). The community benefit of masking for SARS-CoV-2 control is due to the combination of these effects; individual prevention benefit increases with increasing numbers of people using masks consistently and correctly.

Source Control to Block Exhaled VirusMulti-layer cloth masks block release of exhaled respiratory particles into the environment,3-6 along with the microorganisms these particles carry.7,8 Cloth masks not only effectively block most large droplets (i.e., 20-30 microns and larger)9 but they can also block the exhalation of fine droplets and particles (also often referred to as aerosols) smaller than 10 microns ;3,5 which increase in number with the volume of speech10-12 and specific types of phonation.13 Multi-layer cloth masks can both block up to 50-70% of these fine droplets and particles3,14 and limit the forward spread of those that are not captured.5,6,15,16 Upwards of 80% blockage has been achieved in human experiments that have measured blocking of all respiratory droplets,4 with cloth masks in some studies performing on par with surgical masks as barriers for source control.3,9,14

Filtration for Personal ProtectionStudies 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.

Human Studies of Masking and SARS-CoV-2 TransmissionData 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.32In 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%.33A 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.34A 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.35Investigations 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.36,37Seven studies have confirmed the benefit of universal masking in community level analyses: in a unified hospital system,38 a German city,39 a U.S. state,40 a panel of 15 U.S. states and Washington, D.C.,41,42 as well as both Canada43 and the U.S.44 nationally. Each analysis demonstrated that, following directives from organizational and political leadership for universal masking, new infections fell significantly. Two of these studies42,44 and an additional analysis of data from 200 countries that included the U.S.45 also demonstrated reductions in mortality. 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.42

ConclusionsExperimental and epidemiological data support community masking to reduce the spread of SARS-CoV-2. The prevention benefit of masking is derived from the combination of source control and personal protection for the mask wearer. The relationship between source control and personal protection is likely complementary and possibly synergistic14, so that individual benefit increases with increasing community mask use. Further research is needed to expand the evidence base for the protective effect of cloth masks and in particular to identify the combinations of materials that maximize both their blocking and filtering effectiveness, as well as fit, comfort, durability, and consumer appeal. Adopting universal masking policies can help avert future lockdowns, especially if combined with other non-pharmaceutical interventions such as social distancing, hand hygiene, and adequate ventilation.


Share RecommendKeepReplyMark as Last ReadRead Replies (1)

To: Wharf Rat who wrote (1278612)11/15/2020 1:48:59 PM
From: i-node
   of 1371346
>> OK, serious it is; you don't know shit from shinola.

It isn't about what *I* know. It is about what extensive scientific reporting tells me. You could take the time to read the science yourself but you won't.

Reality is cloth masks are not effective. N95/KN95 can help but we don't really know to what extent. And if they aren't used correctly a person becomes a one man superspreader.

And the surgical mask is of marginal value but may be better than nothing.

On June 20, when Fauci magically changed his mind from "Masks don't help" to "You should wear a mask" there was no new science that was relevant to that decision. Dead giveaway.

Scott Gottlieb himself has stated cotton masks "might" offer 10%, or maybe 30% protection. That's not even a vote of confidence. It is an incitement to stupid behavior.

No one gets Covid at the Post Office. We need protection when we enter a medical facility, or when people are in risk categories, or in a crowd. But anyone who wants to prevent the illness simply stays out of the crowd or wears actual mask protection when necessary.

Share RecommendKeepReplyMark as Last ReadRead Replies (2)

To: Wharf Rat who wrote (1278607)11/15/2020 1:49:21 PM
From: Litore Lapis
   of 1371346
Warfie, I think we are done here.

I posted a lot of real scientific stuff, you just poo pooed it all.

The post with the UK retired supreme court judge, and that guy is not stoopid, was my last hope I could get through to you.

In health and safety, and for anyone who watched "breaking bad" ... I used swimming pools full of HF (and worse) in industrial applications over a period of 25+ years. I know a thing or two about safety. . We have a phrase "whats reasonable and practicable, best practice" that is used when discussing safety.

Now listen to this, the second time I have posted it, and tell me your view. Please review the previous statistics on the lethality of Covid19 I have provided too. You are not talking to someone who came down with yesterdays rain btw.

Are we being "reasonable and practicable" with the lockdowns, masks, etc?

Sanity has to reign.

Share RecommendKeepReplyMark as Last ReadRead Replies (2)

To: i-node who wrote (1278614)11/15/2020 2:04:00 PM
From: Wharf Rat
2 Recommendations   of 1371346
"It is about what extensive scientific reporting tells me"
What does this one tell you?

Message 33041849
"when Fauci magically changed his mind from "Masks don't help" to "You should wear a mask" there was no new science that was relevant "
What changed was the supply of masks. There weren't enuf for the health care workers in the beginning.


"No one gets Covid at the Post Office."
That's a relief.

Poorly Protected Postal Workers Are Catching COVID-19 by ...
Sep 18, 2020 — The total number of postal workers testing positive has more than ... more than 900 postal workers had been infected with COVID-19 or had to


When I first started dating my ex, she was living with 3 other women, and 4 kids. I remember one of them, 3 years old, streaking the living room, shouting "Mojo rising", cuz,... see below.

You remind me of that boy, but he grew up.

Share RecommendKeepReplyMark as Last Read

To: Honey_Bee who wrote (1276952)11/15/2020 2:08:23 PM
From: Heywood40
1 Recommendation   of 1371346
Caption this picture...


Share RecommendKeepReplyMark as Last ReadRead Replies (1)

To: Litore Lapis who wrote (1278615)11/15/2020 2:16:10 PM
From: Wharf Rat
2 Recommendations   of 1371346
"I posted a lot of real scientific stuff,"
Don't flatter yourself. You're posting bullshit.

"The post with the UK retired supreme court judge, and that guy is not stoopid, was my last hope"
He might not be stupid, but anybody who values a judge's opinion about a disease more than he values the advice of physicians certainly is.

"You are not talking to someone who came down with yesterdays rain btw"
Yesterday's rain is today's fairy ring.

Share RecommendKeepReplyMark as Last ReadRead Replies (1)

To: Heywood40 who wrote (1278617)11/15/2020 2:20:04 PM
From: Wharf Rat
1 Recommendation   of 1371346
Where's the fun in keeping it clean?

Share RecommendKeepReplyMark as Last Read

From: bruwin11/15/2020 2:20:33 PM
1 Recommendation   of 1371346

Share RecommendKeepReplyMark as Last ReadRead Replies (1)

To: i-node who wrote (1278614)11/15/2020 2:26:03 PM
From: Brumar89
3 Recommendations   of 1371346
Why do you think Memorial Hermann would lie to us about masks?

Share RecommendKeepReplyMark as Last Read
Previous 10 Next 10