So did they also include what was stated later by her or is research not to be relied upon if it disagrees with your ignorance?
Later, facing a rash of criticism, the university on July 16 added a clarification to the commentary that stated:
“We agree that the data supporting the effectiveness of a cloth mask or face covering are very limited. We do, however, have data from laboratory studies that indicate cloth masks or face coverings offer very low filter collection efficiency for the smaller inhalable particles we believe are largely responsible for transmission, particularly from pre- or asymptomatic individuals who are not coughing or sneezing. At the time we wrote this article, we were unable to locate any well-performed studies of cloth mask leakage when worn on the face—either inward or outward leakage. As far as we know, these data are still lacking.”
The evidence that does exist comes both from laboratory studies and real-world scenarios.
For example, one recent laboratory experiment used laser lights to visualize respiratory droplets expelled by test subjects who repeated the phrase “stay healthy.” Each time the subjects spoke, their speech generated hundreds of droplets ranging in size from 20 to 500 micrometers. The research concluded that covering the speaker’s mouth with a damp washcloth blocked nearly all of them.
Some of the more compelling research includes a recent study that used publicly available data to calculate the COVID-19 growth rate before and after mask mandates in 15 states and the District of Columbia between the end of March and late May of 2020. Researchers found a significant slowdown in the daily growth rate in those areas and concluded that mask mandates may have prevented up to 450,000 new virus cases.
rooster, Would have been good if you had told us who sent you that pm. Why? Because it would help us to assess whether or not the content was authentic.
That said, thanks for the thought, just you should know only you and the one who sent you the pm (i guess) can get anything from that link. It .. https://investorshub.advfn.com/boards/read_pmsg.aspx?message_id=168861536 .. won't work for any of us. Except if the one who sent it to you also posts on this board. Guess that's not the case or they would have just posted it publicly.
Re one bit of the content of your post: 8 COVID-19 Face Mask Myths, Debunked After more than two years of the pandemic, there's still a lot of misinformation spreading across the country. Katie Teague April 15, 2022 11:15 a.m. PT [...] Myth 2: Cloth masks are useless P - Though a cloth covering alone may not completely prevent someone from spreading the coronavirus, it still reduces the likelihood. If a cloth mask is all you have, it can still work as a physical barrier by absorbing respiratory droplets that carry the coronavirus. P - "Any mask is better than no mask," CDC director Dr. Rochelle Walensky said at a COVID-19 briefing. Her agency recommends well-fitted masks, which can include multiple layers of cloth masks.
[That from Walensky would seem to be common sense to more people than not.]
Still, the most protective masks are N95 respirators, which block 95% of tiny particles, including viruses, and they're much easier to find now than they were at the start of the pandemic. If you're worried that using N95 masks will mean frontline workers won't have access to them, that's not such a concern anymore. P - Read more: The Best Face Masks to Stop COVID-19 .. https://www.cnet.com/health/medical/best-face-mask/ https://www.cnet.com/health/8-covid-19-face-mask-myths-debunked/
Note that it's noted you changed your position from spreading misinformation about masks in general, here
That was naughty . Anyway moving on, here is a link to the article whoever pmmed that to you should have given you:
Cloth Masks Are Useless Against COVID-19 April 25, 2020 Frank Diamond Infection Control Today, Volume 24, Issue 5 Lisa Brosseau, ScD: "What we’re seeing is a lot of magical thinking. A lot of wishful thinking. Cloth masks are wishful thinking." Lisa Brosseau, ScD, is a nationally recognized expert on infectious diseases. Brousseau taught... [...] Lisa Brosseau: The article started out with the goal of trying to look at the literature related to cloth masks in healthcare. And then it got expanded way beyond that to cloth masks and surgical masks and respirators for healthcare and for the community. It was much more comprehensive than I expected it to be. Took me a little longer to write but at the end of the day, I was looking at cloth masks and surgical masks and respirators from several points of view. First of all, for healthcare and community, but also do they work as source control? Or do they work as personal protective equipment? Or both? And at the end of the day, cloth masks in my opinion don’t work in any form. They aren’t very good at source control, except for maybe very large particles. And they should not be used in healthcare settings for a number of reasons. Surgical masks, I decided, based on the literature, might have a role as source control for people who have symptoms. Say if they’re staying home and they have some symptoms. They shouldn’t be something you’d wear if you have symptoms going out into the public because you shouldn’t be going out into the public service. But it’s a good option for patients to wear in healthcare settings where they-especially for those who are experiencing symptoms-to what I would call diminish the viral load. Basically, decrease the amount of particles, infectious particles in the air in a healthcare setting. So, at the end of the day, the only thing that provides personal protection for the person wearing the mask is a respirator. And that is the thing that healthcare workers should be wearing. Particularly if we’re worried about the small aerosols, small particles that people will generate when they’re infectious. And in fact, people generate particles, whether they’re infectious or not. But particularly when they’re infected and infectious, that will be present in the vicinity of a patient. The best protection in that case is for the healthcare worker to wear a respirator. And I’ve got asked a little bit to think about respirators for the community. You know, if we had a lot of respirators, that might be a good idea, but we don’t have very many of them. And so, for the purposes of saving those respirators for the people who really need them, I recommended that the public not be wearing respirators and not be buying respirators. And if they had them, please donate them even to healthcare workers. That’s a good summary.
ICT®: You did a deep dive into the literature. I saw you had many, many references. So, the mystery to me is why did the CDC say to people go out and wear cloth masks if you want to?
Brosseau: What’s interesting to me is if you look at the references that were listed on under their recommendation, none of them have anything to do with masks or the performance of masks or the performance of their filters or any of that. They’re all references related to pre-symptomatic or asymptomatic transmission. I didn’t get the message there entirely, but I was glad to see is that they recognized that asymptomatic and pre-symptomatic transmission are happening. My message would have been if those were the references I was looking at, is maybe we should actually be encouraging people to stay home more. My biggest problem with telling people they can wear masks is it gives you this false sense of security. And it might even encourage you to think that now you’re protected and you’re protecting people around you. My husband and I try to take a walk every afternoon, just to get out, get a little bit of fresh air and exercise. And I’m seeing more and more people now wearing cloth masks on the streets. And I don’t go to stores anymore, but my understanding is they’re wearing them there as well. I don’t have a problem with people wearing them. I just want them to understand that they aren’t very much more protective than if they weren’t wearing them. And they’re really not doing a whole lot of good for the people around them. So, we should continue to do social distancing as much as we possibly can. More - https://www.infectioncontroltoday.com/view/cloth-masks-are-useless-against-covid-19
Notice there she says "they aren’t very much more protective than if they weren’t wearing them." Note again the "aren't very much more" meaning they do provide some more protection, just not much more.
She is not saying they are totally useless as the heading on that article and you said.
So we are now back to exactly the position we have taken since we knew something about the mask situation early on. That cloth masks provide some more protection, just not much more.
And note also she said people should stay home more if at all at risk. So there is little doubt just from that little bit that she was in favor and adhered to all the mitigation methods you and so many other irresponsible conservative and libertarians have mocked from the beginning.
Oh one other thing. If the person who sent you the article gave you the link i've just given you, you should have given it to us. If they didn't they should have.