Interested in making yourself a mask? Here are instructions from the CDC: www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.htm l And if you’d like to learn more about the fabrics tested in the 2 studies mentioned in the video, check out the following links: pubmed.ncbi.nlm.nih.gov/24229526/ and newsroom.wakehealth.edu/News-Releases/2020/04/Testing-Shows-Type-of-Cloth-Used-in-Homemade-Masks-Makes-a-Difference
In the past I've been using the study "Professional and Home-Made Face Masks Reduce Exposure to Respiratory Infections Among the General Population" by Marianne van der Sande et al. PLoS One. 2008" (also available at the NIH National Library of Medicine website) which was published prior to the H1N1 outbreak, and it's good to see how it compares to an article published after that outbreak. It seems that the figures are somewhat similar which is good!
Here is some additional information backed by Science to help you make a more informed decision. Masks & Science - podcasts.apple.com/us/podcast/the-osterholm-update-covid-19/id1504360345?i=1000476612128 Transcript - www.cidrap.umn.edu/revised-mask-transcript-6220 References - www.cidrap.umn.edu/references-masks-6220
Misleading video. There is disagreement among scientists regarding the wearing of face masks and cloth face coverings in lieu of masks. It’s important to be educated in all of the positions and follow the science.
@JB Bgin "Safer" and "kinder" mean nothing to overall effectiveness. It's like those ultrasonic pest repellers that claim to repel rodents but don't, sure they look like they are working but if you do any study on them you would find they are useless. Same with cloth masks, the ONLY masks proven to work are sealed n95 masks and hospital workers need those the most not Joe down the street who has a 0.05% dying from the virus...
JB Bgin well this is all we can wear at this time tho. The best and only affordable option out there right now which everyone is literally using and are even encouraged to use is non-surgical masks or cloth masks. It’s obviously not gonna do much but it is what everyone has on out in the public. It is what the authorities are telling people to wear. It literally says on the box “ This product does not protect you from any type of viruses or germs ”.
@@AdamSmith-gs2dv Yours doesn't protect you, it protects me. Mine protects you. This seems to be the fundamental thing people are missing. No mask will give you 100% protection short of wearing a spacesuit. But wearing a face covering does prevent some of the aerosol in your breathe reaching others. It's a reduction, not an elimination. Reduction might be all that's necessary to prevent another outbreak and consequential lockdown.
@JB Bgin @JB Bgin 1: No way in hell are we taking the word of reduced spread there when their government likely killed the person who leaked the virus. 2: We are "really behind" but their relaxed outdated food laws are what caused this. This exact reason is why most countries have food regulation laws. Inhuman caging and street butcher and sell (that's what its usually call, Im not just being harsh) is centuries behind. You cant, as a civilized forward thinking nation, think its okay to horde kill, bleed and store all your products in one open outdoor market thats the same exact place the food shits/pisses. Fruit and veggies, obviously. But their meats set in the hot sun for hours after butcher on top of other meats that are setting meters away from piss and shit. Nah, they are obviously advanced in many areas, and their citizens are blameless and innocent for just buying food for their families and the vendors are using whats available to them, but its not up for debate that their failure of leadership in food and drug safety caused a literal pandemic. Again, this isnt directed at you citizens of China if some happen to read this, you are blameless and you should be offered more guidance and assistance for your meat, food and drug storage as vendors. 3: Also, masks would never work in any western Country long term. You simply will never be able to make us wear masks because you legally cant tell us what we can and cant wear, if a State has no basic laws over nudity and the private business owner allows it, we could walk right in nude/topless (many states have no natural laws against it) and business owners would never mandate it and let it hurt their sells/revenue. If you want to wear one, wear it as is your right but you (in normal times) cant logically think telling people what they can and cant wear will fly in modern society... Thats a quick direct line to "no shorts on fat/chubby people" or "No take tops on people with tattoos" if the wrong person comes into power, which many believe already sets the perch. China has no mandate on masks (outside of the pandemic), they simply chose it due to severe overcrowding. The people of China dont wear masks outside packed dirty cities. \
Not so obvious for the leftist crowds packed up during their protests, thinking it's okay to stay up close to other people just because they're wearing a mask
@O-Pixels Security Theater : Security theater is the practice of taking security measures that are intended to provide the feeling of improved security while doing little or nothing to achieve it.
A few months ago (it feels like a lifetime ago), I remember Reactions decided to take a little break to think about how to improve the channel. Now we're all forced to do that with our lives, unfortunately. The good news: I feel like the recent videos have been the most helpful and essential that the channel has ever done. The current limitations have brought more focus to Sam's excellent explanations and expert interviews, and the visuals look nice and truly help illustrate things. Stay safe, stay looking out for one another, try to let your limitations spark your creativity. It can be tough, but let's use this time to think about what we are and rebuild into something even better.
Follow a more conservative approach based on the available information. If it was overkill then you protected yourself with only a minor inconvenience, and if your under protected...well then you are in a more precarious situation.
Andrew Siegel make the most prudent choice based on your existing risk factors (co-morbidity’s) , discomfort threshold for PPE and what your ultimate goals are. That’s all we can do.
What you do is a couple things. First, decide if taking the safe approach is worth the risk or hassle. In this case, wearing a mask is a tiny inconvenience. It's a little uncomfortable, yeah, but stop being a little bitch. Second, listening to individual doctors argue will cloud your view. What is the general consensus view amongst all doctors? Well, the vast majority recommend wearing a mask. Consensus views by doctors, who follow evidence based recommendations, are based on the best available science. Is it always right? Of course not, but that's the point of science. We keep gathering data, and sometimes, we find out we were wrong.
Only 70% of the breathing goes through mask with the other 30% going around the sides of the mask per May Chu, a clinical professor in epidemiology at the Colorado School of Public Health. Virus is 0.125 microns in size and the N95's can do 0.30 microns of filtration (fit about 3 virus cells through mask's filtering per sq um) with the other masks doing only about 3.0 microns or higher (e.g. even less filtering- fit about 24 virus cells through the mask's filtering per sq um) Also masks deflect the droplets up over your head (from sneezes/coughs) so that they will take much longer to fall rather than without masks. Really not certain how good "robber's masks/bandannas " are at all as they have even less filtering and tight fitting qualities with more air going around them than through them worse than the N95's (70/30). They never define droplets sizes but only as "bigger". -- As the droplets dry out, does the virus escape the mask or do the droplets help concentrate the virus in your mask for re-absorption by your own body (e.g. make you sicker/less tolerant to the disease)? -- Google this stuff. -- Not really understanding the mask thing in the first place other than using it as "badge of caring/ better than nothing" display about the virus. Maybe use splash shields for everyone instead ? -- At least the droplets would dry out faster with less contamination to yourself. Maybe your own air tank (scuba gear?) would be even better!! Also --Guidelines from the Centers for Disease Control and Prevention making the rounds this week on the internet are clarifying what we know about the transmission of the corona virus. >>The virus does not spread easily via contaminated surfaces, according to the C.D.C.
@@snaplash Right. End of story. It amazes me how we have been at this for months, and people still have zero clues about how filtration works, how mask are tested, etc. They seem spend all their mental effort on trying to convince themselves that any effort isn't worth it. Lazy brains, and dysfunctional at that.
I can't emphasize that a cloth mask doesn't mean you go into public to enjoy dinner dates and bar crawls or club raves. Stay home everyone and stay safe and kill the virus this way. Everyone going to Walmart and doing the usual only spreads the virus. If you have tested positive or show symptoms of being sick with a respiratory infection, and you haven't tested negative, stay home. Call out from work. Whatever you do, just isolate until 14 days after symptoms have gone away. N95 masks filters 0.3 micron sized particulates. Another way of saying this is 300 nanometers. Class N, R and P respirators are certified at
@@Deanzphx all good info.. But surgical masks are worn mostly to protect the surgeons and assistant from fluids from the patient. Lots of cutting and squirty things going on. At least that is what my medical friends tell me. When you look up the masks that is also how they're are promoted by the manufacturer.
Hey Sam! Totally enjoyed the video. I have a question though. Why is it that all the desks and the laptops (along with a cup of hot coffee and a neat collection of notes) of the Ph.D. students like you are so clean and tidy? 😅
People were told not to buy masks to not exhaust the supply of somethingwith much greater use in hospitals, not because there is some problem with wearing one..
I think this is a bit of reverse psychology. People feel safe because they are wearing masks, but in my (non-expert) opinion, the cloth masks stop the wearer from transmitting to others. The masks are excellent at stopping the wearer's possibly infected droplets out to others. So this is good to stop those that are non-symptomatic carriers from inadvertent transmission.
I absolutely new it was because of how people go out and grab a bit of it in a frenzy, so they down played it because there was already a shortage. It really was pretty obvious because I have masks for dust and people wear them for allergies so I know they protect the wearer from breathing it in too although they won't say that part. It works both ways.
Fabric filters are not like pasta drainers. In fact, the smallest aerosols are as likely to be filtered out as the largest aerosols. Every filter material has an MPPS (most penetrating particle size). This is due to the different modes particles are captured on the fiber of the filter. The larger particles are mostly captured by impacting the fiber, intercepting with the fiber while being carried around the fiber by air. The smallest particles are more affected by the movement of air molecules so such particles usually go zig-zag in the filter airway thus more likely to be caught on the filter fiber.
Take a look at your chart. That pressure drop across barrier ? For example the vacuum bag at 10 likely means that the air leaving and entering mask will go around the mask edges due to the pressure barrier. A vacuum bag filter is worse than nothing at all
I work in a lab handling COVID samples and we wear surgical masks as we work too close to fully social distance. 95 masks aren't necessary for most people in my opinion, if you keep your distance and wash your hands, you're mostly fine. Just be smart and sensible.
Frustrating video. Didn't mention eye protection - if you're not wearing it, the difference between cloth/surgical/N95 is pretty moot. And didn't talk about the difference between protecting yourself from other people, and other people from yourself if you have the disease and are asymptomatic.
Thanks for the apartment tour! I ordered my masks from China and when I got the box went up and down my street to give most away to my elderly neighbors. Ciao from Italy! L
I am surprised you found a study on common fabrics against viral particles. Some of the numbers seem inflated though. A surgical mask has rarely ever been rated N90 from what I found. I would have to read this study to fin out why the number was so high. N95 was shown to trap 8X more particles than 3 ply surgical masks in studies I found. The flow rate in this study seems low, however, and that might have contributed to the numbers being higher. The standard is based on what perentage of 0.3 microns particles are blocked at a flow of 85 L/min. Almost 3 times higher than this test.
these people must be pretty clueless about social distancing. That doesn’t really help anything. The majority of people, at least the ones I know, will cover their mouth when sneezing or coughing. You’ll get the virus regardless if you do anything most of the time. social distancing is absolutely terrible for people who have mental health issues; I speak from experience. Many of the doctors in my area think that my town has already had the virus and probably has heard immunity
Is this True ? research done in Asia 2016 We also showed that filtration was extremely poor (almost 0%) for the cloth masks. Observations during SARS suggested double-masking and other practices increased the risk of infection because of moisture, liquid diffusion and pathogen retention. These effects may be associated with cloth masks.
Isn't it disappointing that nobody is doing good research for finding out how to make the best mask for this virus ? This situation is to begin with different from that where you need protection at work from fine dust, because here quick saturation through clogging is unlikely. It might very well be that the virus is so small that it can pass through any fabric that also allows for easy breathing. But it's also possible that a combination of several thin nylon layers on top of the cotton captures already a lot of it electrostatically. Perhaps a wet mask offers (for short use then) also a almost perfect protection. Perhaps some foam material is an option (virus taking such a long road through it, it sticks) or some special glass wool (virus gets damaged by sharpness) or even very thin woven, low voltage charged copper wire (virus doesn't survive well on copper and a low charge could enhance this effect) could be an option.
The govt knew exactly what they were doing when they did a complete 180 on mask wearing. They knew the Fashionista American Karens would spring into action and break out the dusty Singer machine from the upstairs closet and get to work. They also knew they would spew shame on anyone who dare question the efficacy of their creations.
Interesting Video. Thank you. In Germany we have been told, that the cloth masks are Not very good in protecting yourself, but are helping a lot to Not spread viruses and germs to others.
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I HAVE AN IMPORTANT MESSAGE...STOP LISTENING TO THE CDC! THEY ARE THE SAME ORGANIZATION AFFILIATED WITH THE ONES THAT UNLEASHED THIS SHIT! PEOPLE IF YOU DON'T WAKE THE HELL UP, YOU ARE GONERS!
The original statement was an acknowledgement that the mask is useless in protecting the wearer from infection (no mask can filter or catch such a tiny thing as a virus). Most people still think the mask has something to do with personal protection. The change of message demonstrates the realization that the mask reduces considerably aerosol transmissions which may contain SARS-Cov-2. Its utility is in community/environmental protection. The CDC is staffed by human beings who are not perfect. Human beings suddenly in charge of disseminating important messages take time to sharpen those messages. Sharpening may come with focus and attention, but it also comes as a result of experience as the context of the message evolves. I blame less the leaders for being caught off guard than I blame the sheeple for insisting on being stupid even AFTER the leaders finally get their ducks in a row.
How much social distance cannot be determined by people, it depends on the pressure of sneeze/breath and the force of WIND! Why do people not see that at the streets things are different, there are cars, smoke and wind passing with different amount of force.
I think it should be, 2-4 ply cloth masks for those who doesn't regularly go outside, surgical for those who regularly go outside, maybe mostly to work...and n95 for our frontliners :/
So unless the person is hacking up a storm, the cloth mask isn't going to do much. If they are just breathing normally, than distance alone should be enough.
But it won't make any difference if you get a tiny droplet or a bigger droplet; 10% protection or 80% protection; all you need is one little droplet and it's got you, right? Is it truly worth it? Oh but now some are using the 'overall' plastic face mask. Is that any better?
Sorry all of the Real world (took place with hospital workers on the job using PPE correctly) Randomized trials going back over a decade, with verified rests and empirical Data, show that masks slow the spread of respiratory infections, not 1. The most recent was done by the CDC for the WHO in May of this year. Guess what ? Nope! Now there are some laboratoetruals that show they could bit real world says they don't. It has been known for some time that outside of hospitals and from the RCT even In the hospital, they do little if anything to stop the spread. Consoder this line from a recent, NEJM article on whether to increase mask use in hospital. Oops can't share a photo here.. The quote says," we k ow that outside of hispital facilities, wearing a mask gives little if any protection from infection. When looking at the studies, how they are structured, where they were done, and whether the results are verified matters a lit
Would you like to see 5 peer reviewed papers stating that "surgical masks" are at best 30-50% effective at retaining/resisting the micro-aerosols/ microdroplets? Wearing a surgical mask to protect is NO MORE effective than putting out a forest fire with a water pistol. NO," its better than nothing" doesn't cut it!
no, big droplet fall at shorter distance while aerosol float longer. The aerosol float longer because it is light enough to get a lift upward from air turbulence (that you created by sneezing & breathing).
@@xponen thanks. Makes sense, but somehow I was able to hypothesize the other way around as well (bigger droplets -> more kinetic energy). I should get back to ol' physics book during the lockdown :) .
That is the premium mask to have, it is rated against viruses. Of course their harder to breath through even with the little respirator on it well for someone with breathing issues anyway. You can reuse it to by hanging it on a hanger in garage and don't touch it or try to re use it for at least 3 days (72 hrs) for the virus to die on it's own on that surface type because you can't wash them. Unless you have an endless supply.
I'm starting to find used masks laying around the parking ramp odlf an airport, and I recognize poor hygiene of people wearing masks that touch all the same stuff I do - such as touch screen check-out machines at the grocery store. I have also seen many people pulling their masks down below their nose. Anything that MIGHT help, but pointedly causes difficulty breathing is a jet negative to me. The Mary Sue's and Karens glare at me over their cloth mask they have used without washing for the last week, while I am conscientious about everything I touch, and if I must cough or sneeze, I'm careful about its vectors. We are cutting off important means of communication, to appease the "may helps". I hope this blows over soon, and we can be able to see each other smile again.
Love this video ! I've been listening and watching for 2 months now and this is the best more complete video ever ! Everyone should keep in mind that the Corona virus is very small ! Very small ! Cheers :)
The virus is very small but it has to have a vehicle to get around and that's the stuff that comes out of our mouths into the air and can be projected long distances depending on how it's projected talking vs sneezing which some people really sneeze big. So it's much bigger than just the virus but it can vary in size depending on what mode of transportation it uses. If that analogy helps.
@@freddsims648 Many of us wear glasses and cannot see through fogged up lenses when we cover our noses too. Ergo we are constantly fiddling with our masks ESPECIALLY if we are expected to cover our noses too. Supposedly there's ways to adjust your mask over your nose so it doesn't fog up your glasses but I've found those methods to be a crapshoot at best. I'll stick to covering my mouth with my cloth mask and sneezing into my elbow when my allergies act up so I can actually function with vision and not walk into walls due to fogged glasses!
Any thoughts on using blue "shop towels" as a mask, or as part of one? It's hard to find concrete information about it, though some people are using them.
Wear a mask. Whatever you do 1) be selfless and 2) think about others. That’s the reason people wear masks in other countries. We need to show the world we are just as good. This is not about freedom.
Thats why two layers are great. Because maybe they get trought the first layer but then there is the second layer wich is differently woven to keep the particals inbetween. Its like a maze for corona if you use 2 layers (or 3)
A very good question. It seems to me that the answer is almost certainly "yes." Furthermore, if social distancing actually works, then slowing down the airflow from an infected person would be highly desirable. The air carrying the virus particles will not go as far, making social distancing more effective. This matter is seldom addressed in these forums. As far as I can see, it is rarely addressed in research.
A respirator does a different job than a sloth or surgical mask. Respirators keep germs out (the button vents breath/germs out to the world) while masks keep your droplets inside so as to not infect those around you.
Yes it can. Wearing a mask means that the air you are breathing has an increased CO2 level. The standard for masks is that the CO2 levels in the mask can be up to 1%. In the UK (and Europe) the maximum level for the workplace is 0.5% averaged over the working day. If you are wearing a mask for 8 hours in the UK, that would be in breach of health and safety laws
I would have more than one and switch to a fresh one after a while because your mask will get harder to breath out of as your moisture etc accumulates inside the mask. If you are wearing a cotton mask it should provide better breathability.
Me and 12 other dudes wrestled a dude for an hour who turns out had covid. No dudes except for infected dude has corona. No we don’t wear masks when we wrestle. Dude! Go figure
You need to see the video of the firefighter showing how ineffective masks - even surgical masks, are for droplets. The only ones that are any good are the N95s. Btw, thread counts are deceptive. Used to be 200 count was triple thread 200 count one way. Now 200 count can be one thread both ways - or single thread 100 count one way. Gone are the days that 200 count Sears sheets meant you were actually getting the quality equivalent of1200 count single thread both ways.
If they buy the N95 mask themselves, it’s 100% their right to wear it. Stop this madness thinking people shouldn’t be able to buy and use their own property.
I have to differ with the part of no studies have been done; that is not true. Here's the link you can check it out yourself. www.sciencedirect.com/science/article/pii/S0048969720330278 Also I learned you want 3 layers of 100% cotton and the higher the thread count naturally the tighter the threads are woven like 180 thread count. Not sure what a T-shirt would be but a cotton sheet comes in counts like that. Preferably with a metal nose piece so you can eliminate gaps around the nose and it helps you if you wear glasses too. I still think if it can stop droplets from leaving the mask it should do the same for penetrating another persons masks, just like N95 masks are rated to keep stuff out not in. Wash with hot water and dry by machine. If someone is going to wear it for many hours, might want to change to a fresh mask during the day too.
According to OSHA, employers are supposed to provide a working environment that has a minimum of 19.5% oxygen, which is critical when you work on submarines, for instance. I saw a video recently that showed a submarine worker who had a meter that measured the oxygen level, and he put the meter inside of his face mask. Within 2 seconds, the alarm on the meter went off letting him know the level had dropped below 19.5%, so he checked the meter and it read 18.6%. When your brain doesn't get the amount of oxygen it needs, it does irreparable brain damage and it quickly leads to death. If you are required to wear a mask, I would suggest you take frequent breaks so you can get some much needed oxygen, despite what so-called health 'experts' may say.
You know, vacuum cleaner hepa filter replacements are cheap and prevelent and can be cut apart and made Into 100% effective mask. They make furnace filters at any big box store that actually trap viruses (they are the most expensive ones). Air purifier filter replacements can be made into masks. Too bad the average human intellige level is so low. I don't bother wearing a mask 90% of the time though. I suppose I should but we go through flu season every year. This whole thing has been exaggerated exploited for various gains anyway.
How much more effective would it be to wear a double mask vice wearing just one? It occurred to me today when I went to the store to wear my regular surgical mask along with my bandanna type face covering?
It doesn't hurt you to properly wear a mask. There are then 2 possibilities. It either helps slow the spread or it doesn't hurt. Therefore is simply selfish and arrogant not to wear one. Period. It doesn't matter which side of the argument is correct.
There is a third possibility: they cause harm. If masks cause people to engage in more risky behavior (such as getting closer to people, reduing their handwashing etc) then they are causing harm. If a wet cloth mask significantly increases the likelihood of transmission from the mask into the air, or from the air through the mask, then they cause harm. If a mask causes droplets to be propelled up and out the top, higher into the air, keeping them suspended longer, they cause harm. The CDC changed their advice not because they thought something was now safe, but because it would force more people back out into the world. Disjunctive reasoning doesn’t work if you exclude a whole possibility.
That's a good one because no one talks about that, but there are plastic protective glasses at home depot you can buy because that is another open area too.
Rather having hundreds of expert and video with thousands of different opinion . Can some lab make a machine with that tests the most used material. Along with being able to have health breathing . Also update the video what’s recommended at this video date will infect or kill people .
I just found this video, it is great but maybe it is cultural thing but why people are soo so so mean to the uploader, I will try to explain in my non native language as best as I can, they take the frustration and fear on the uploader. Common sense, which is not that common at all, is try as much as you can to practice social distancing, wear the best mask you can have, and believe in destiny if it is your day it is, if you did well in this life no fear .. either that or complain and project your negativity and frustration on people who work hard to inform . Love and prayer for the person behind this video. Salam
@@tweetiebirdI have a graduate degree in materials engineering, I reckon I understand the transmission of particles through different materials a whole lot better than you.
Interested in making yourself a mask? Here are instructions from the CDC: www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.htm l And if you’d like to learn more about the fabrics tested in the 2 studies mentioned in the video, check out the following links: pubmed.ncbi.nlm.nih.gov/24229526/ and newsroom.wakehealth.edu/News-Releases/2020/04/Testing-Shows-Type-of-Cloth-Used-in-Homemade-Masks-Makes-a-Difference
In the past I've been using the study "Professional and Home-Made Face Masks Reduce Exposure to Respiratory Infections Among the General Population" by Marianne van der Sande et al. PLoS One. 2008" (also available at the NIH National Library of Medicine website) which was published prior to the H1N1 outbreak, and it's good to see how it compares to an article published after that outbreak. It seems that the figures are somewhat similar which is good!
The pubmed link worked, but the cdc link does not work, it says 404. Can you please provide the correct link?
Hello dear, please can I get your E-mail, I have an article I want you to see
The first link for DIY is broken.
Latest link:
www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.html
Here is some additional information backed by Science to help you make a more informed decision.
Masks & Science
- podcasts.apple.com/us/podcast/the-osterholm-update-covid-19/id1504360345?i=1000476612128
Transcript
- www.cidrap.umn.edu/revised-mask-transcript-6220
References
- www.cidrap.umn.edu/references-masks-6220
Misleading video. There is disagreement among scientists regarding the wearing of face masks and cloth face coverings in lieu of masks. It’s important to be educated in all of the positions and follow the science.
@JB Bgin "Safer" and "kinder" mean nothing to overall effectiveness. It's like those ultrasonic pest repellers that claim to repel rodents but don't, sure they look like they are working but if you do any study on them you would find they are useless. Same with cloth masks, the ONLY masks proven to work are sealed n95 masks and hospital workers need those the most not Joe down the street who has a 0.05% dying from the virus...
In other words, there is ZERO evidence that cloth masks help protect in anyway against covid19. We need to stop with the false sense of protection.
JB Bgin well this is all we can wear at this time tho. The best and only affordable option out there right now which everyone is literally using and are even encouraged to use is non-surgical masks or cloth masks. It’s obviously not gonna do much but it is what everyone has on out in the public. It is what the authorities are telling people to wear. It literally says on the box “ This product does not protect you from any type of viruses or germs ”.
@@AdamSmith-gs2dv Yours doesn't protect you, it protects me. Mine protects you. This seems to be the fundamental thing people are missing. No mask will give you 100% protection short of wearing a spacesuit. But wearing a face covering does prevent some of the aerosol in your breathe reaching others. It's a reduction, not an elimination. Reduction might be all that's necessary to prevent another outbreak and consequential lockdown.
@JB Bgin @JB Bgin 1: No way in hell are we taking the word of reduced spread there when their government likely killed the person who leaked the virus. 2: We are "really behind" but their relaxed outdated food laws are what caused this. This exact reason is why most countries have food regulation laws. Inhuman caging and street butcher and sell (that's what its usually call, Im not just being harsh) is centuries behind. You cant, as a civilized forward thinking nation, think its okay to horde kill, bleed and store all your products in one open outdoor market thats the same exact place the food shits/pisses. Fruit and veggies, obviously. But their meats set in the hot sun for hours after butcher on top of other meats that are setting meters away from piss and shit. Nah, they are obviously advanced in many areas, and their citizens are blameless and innocent for just buying food for their families and the vendors are using whats available to them, but its not up for debate that their failure of leadership in food and drug safety caused a literal pandemic. Again, this isnt directed at you citizens of China if some happen to read this, you are blameless and you should be offered more guidance and assistance for your meat, food and drug storage as vendors. 3: Also, masks would never work in any western Country long term. You simply will never be able to make us wear masks because you legally cant tell us what we can and cant wear, if a State has no basic laws over nudity and the private business owner allows it, we could walk right in nude/topless (many states have no natural laws against it) and business owners would never mandate it and let it hurt their sells/revenue. If you want to wear one, wear it as is your right but you (in normal times) cant logically think telling people what they can and cant wear will fly in modern society... Thats a quick direct line to "no shorts on fat/chubby people" or "No take tops on people with tattoos" if the wrong person comes into power, which many believe already sets the perch. China has no mandate on masks (outside of the pandemic), they simply chose it due to severe overcrowding. The people of China dont wear masks outside packed dirty cities. \
"the farther away the better"... Captain Obvious statement of the year.
Double layer masks did better than single layers.
Not so obvious for the leftist crowds packed up during their protests, thinking it's okay to stay up close to other people just because they're wearing a mask
@O-Pixels Security Theater : Security theater is the practice of taking security measures that are intended to provide the feeling of improved security while doing little or nothing to achieve it.
A few months ago (it feels like a lifetime ago), I remember Reactions decided to take a little break to think about how to improve the channel. Now we're all forced to do that with our lives, unfortunately. The good news: I feel like the recent videos have been the most helpful and essential that the channel has ever done. The current limitations have brought more focus to Sam's excellent explanations and expert interviews, and the visuals look nice and truly help illustrate things. Stay safe, stay looking out for one another, try to let your limitations spark your creativity. It can be tough, but let's use this time to think about what we are and rebuild into something even better.
Thanks for such a thoughtful response! We appreciate it and are glad you're enjoying the new content.
So what do you do when one Dr. says one thing and another Dr. says another ? Nobady knows what to do.
Follow a more conservative approach based on the available information. If it was overkill then you protected yourself with only a minor inconvenience, and if your under protected...well then you are in a more precarious situation.
That's the problem every expert is contradicting every other expert because no one actually knows what to do.
Andrew Siegel make the most prudent choice based on your existing risk factors (co-morbidity’s) , discomfort threshold for PPE and what your ultimate goals are. That’s all we can do.
What you do is a couple things. First, decide if taking the safe approach is worth the risk or hassle. In this case, wearing a mask is a tiny inconvenience. It's a little uncomfortable, yeah, but stop being a little bitch.
Second, listening to individual doctors argue will cloud your view. What is the general consensus view amongst all doctors? Well, the vast majority recommend wearing a mask. Consensus views by doctors, who follow evidence based recommendations, are based on the best available science. Is it always right? Of course not, but that's the point of science. We keep gathering data, and sometimes, we find out we were wrong.
So therefore do nothing? Think critically! I like what Ryan Yuhr says, maybe try a more conservative approach based on the available information.
Only 70% of the breathing goes through mask with the other 30% going around the sides of the mask per May Chu, a clinical professor in epidemiology at the Colorado School of Public Health.
Virus is 0.125 microns in size and the N95's can do 0.30 microns of filtration (fit about 3 virus cells through mask's filtering per sq um) with the other masks doing only about 3.0 microns or higher (e.g. even less filtering- fit about 24 virus cells through the mask's filtering per sq um)
Also masks deflect the droplets up over your head (from sneezes/coughs) so that they will take much longer to fall rather than without masks. Really not certain how good "robber's masks/bandannas " are at all as they have even less filtering and tight fitting qualities with more air going around them than through them worse than the N95's (70/30).
They never define droplets sizes but only as "bigger". -- As the droplets dry out, does the virus escape the mask or do the droplets help concentrate the virus in your mask for re-absorption by your own body (e.g. make you sicker/less tolerant to the disease)? -- Google this stuff.
-- Not really understanding the mask thing in the first place other than using it as "badge of caring/ better than nothing" display about the virus. Maybe use splash shields for everyone instead ? -- At least the droplets would dry out faster with less contamination to yourself. Maybe your own air tank (scuba gear?) would be even better!!
Also --Guidelines from the Centers for Disease Control and Prevention making the rounds this week on the internet are clarifying what we know about the transmission of the corona virus.
>>The virus does not spread easily via contaminated surfaces, according to the C.D.C.
Thank you! AND of the 70% hitting mask from both sides, 50% of that GOES THROUGH.
Standard epidemiological papers attest to THAT consistently.
snaplash Unless you’ve got a professionally fitted N95, you’re not going to get a mask that fits about the sides properly.
You write like my grandpa. Long, clear thoughts
@@snaplash Right. End of story. It amazes me how we have been at this for months, and people still have zero clues about how filtration works, how mask are tested, etc. They seem spend all their mental effort on trying to convince themselves that any effort isn't worth it. Lazy brains, and dysfunctional at that.
So there's a 35% reduction right there. Could be enough to save a life or a lockdown.
I want head into the Wilderness , I'm done with the Fear Police!
Me Too John. Me too.
Can I go too?
John Riso, sounds good. Bye! 👋
I can't emphasize that a cloth mask doesn't mean you go into public to enjoy dinner dates and bar crawls or club raves. Stay home everyone and stay safe and kill the virus this way. Everyone going to Walmart and doing the usual only spreads the virus. If you have tested positive or show symptoms of being sick with a respiratory infection, and you haven't tested negative, stay home. Call out from work. Whatever you do, just isolate until 14 days after symptoms have gone away.
N95 masks filters 0.3 micron sized particulates. Another way of saying this is 300 nanometers.
Class N, R and P respirators are certified at
@@Deanzphx all good info.. But surgical masks are worn mostly to protect the surgeons and assistant from fluids from the patient. Lots of cutting and squirty things going on. At least that is what my medical friends tell me. When you look up the masks that is also how they're are promoted by the manufacturer.
Hey Sam! Totally enjoyed the video. I have a question though. Why is it that all the desks and the laptops (along with a cup of hot coffee and a neat collection of notes) of the Ph.D. students like you are so clean and tidy? 😅
People were told not to buy masks to not exhaust the supply of somethingwith much greater use in hospitals, not because there is some problem with wearing one..
I always thought that they were lying when they told people not to wear masks!
I think this is a bit of reverse psychology. People feel safe because they are wearing masks, but in my (non-expert) opinion, the cloth masks stop the wearer from transmitting to others. The masks are excellent at stopping the wearer's possibly infected droplets out to others. So this is good to stop those that are non-symptomatic carriers from inadvertent transmission.
I absolutely new it was because of how people go out and grab a bit of it in a frenzy, so they down played it because there was already a shortage. It really was pretty obvious because I have masks for dust and people wear them for allergies so I know they protect the wearer from breathing it in too although they won't say that part. It works both ways.
If cloth masks work so well why do you have to stay 6 feet apart
It can go in through your eyes. Cloth masks don't protect your eyes.
Fabric filters are not like pasta drainers. In fact, the smallest aerosols are as likely to be filtered out as the largest aerosols. Every filter material has an MPPS (most penetrating particle size). This is due to the different modes particles are captured on the fiber of the filter. The larger particles are mostly captured by impacting the fiber, intercepting with the fiber while being carried around the fiber by air. The smallest particles are more affected by the movement of air molecules so such particles usually go zig-zag in the filter airway thus more likely to be caught on the filter fiber.
Take a look at your chart. That pressure drop across barrier ? For example the vacuum bag at 10 likely means that the air leaving and entering mask will go around the mask edges due to the pressure barrier. A vacuum bag filter is worse than nothing at all
I work in a lab handling COVID samples and we wear surgical masks as we work too close to fully social distance. 95 masks aren't necessary for most people in my opinion, if you keep your distance and wash your hands, you're mostly fine. Just be smart and sensible.
Can I use gas mask that I used for painting?
I mean are they better than cloth masks?
Yes better than n95
Gas mask is dust and gas filter
While n95 is only dust filter
Still the best advice is self/family/bubble isolation, then social distancing. Good hygiene should be done all the time.
Agree maybe the key going forward everyone l is to have good hygiene consistently.
According to cdc report,contact tracing efforts have revealed that66% of cases were transmitted through self isolation, now what?
Frustrating video. Didn't mention eye protection - if you're not wearing it, the difference between cloth/surgical/N95 is pretty moot. And didn't talk about the difference between protecting yourself from other people, and other people from yourself if you have the disease and are asymptomatic.
THIS!
..."life is Un- Safe'"
Tell that to those with repeat failed suicide attempts Dying is not that easy !
Thanks for the apartment tour! I ordered my masks from China and when I got the box went up and down my street to give most away to my elderly neighbors. Ciao from Italy! L
Come stai amica ?
Yes I can be a cowboy now.
I love this chanel!
its the coolest way to get the informations from the real professionals, explained for "normal" people!
keep up the good job!
We're so glad to hear this--thanks!
@@ACSReactions well you deserve this :D
@@ACSReactions Please help with your email
great video. I love inventing, at the moment I'm working on a full length shoulder fitting brace with a 2 metre circumference of razor wire.
@JB Bgin ha ha good one !
OP, I feel guilty for laughing my butt off at this.
What about putting a detachable waxed-cloth on one of the layers, would that help in containing the droplets?
Is there a video that mostly uses the info graphics and light on the conversation that is 3 min or less long
I am surprised you found a study on common fabrics against viral particles. Some of the numbers seem inflated though. A surgical mask has rarely ever been rated N90 from what I found. I would have to read this study to fin out why the number was so high. N95 was shown to trap 8X more particles than 3 ply surgical masks in studies I found. The flow rate in this study seems low, however, and that might have contributed to the numbers being higher. The standard is based on what perentage of 0.3 microns particles are blocked at a flow of 85 L/min. Almost 3 times higher than this test.
How does a tight cloth effect normal O2/CO2 exchange.
IF We need 100% filtration then what sd we do?what materials sd we use?answer to this questions?
these people must be pretty clueless about social distancing. That doesn’t really help anything. The majority of people, at least the ones I know, will cover their mouth when sneezing or coughing. You’ll get the virus regardless if you do anything most of the time. social distancing is absolutely terrible for people who have mental health issues; I speak from experience. Many of the doctors in my area think that my town has already had the virus and probably has heard immunity
There are more than one strain within cov-19 and u can get infected again also with a different strain this time
Is this True ? research done in Asia 2016
We also showed that filtration was extremely poor (almost 0%) for the cloth masks. Observations during SARS suggested double-masking and other practices increased the risk of infection because of moisture, liquid diffusion and pathogen retention. These effects may be associated with cloth masks.
I am gonna wearing 4 of those double layered cotton masks now... That's like an old castle with 4 moats, instead of just one. =))
🙄
Isn't it disappointing that nobody is doing good research for finding out how to make the best mask for this virus ? This situation is to begin with different from that where you need protection at work from fine dust, because here quick saturation through clogging is unlikely. It might very well be that the virus is so small that it can pass through any fabric that also allows for easy breathing. But it's also possible that a combination of several thin nylon layers on top of the cotton captures already a lot of it electrostatically. Perhaps a wet mask offers (for short use then) also a almost perfect protection. Perhaps some foam material is an option (virus taking such a long road through it, it sticks) or some special glass wool (virus gets damaged by sharpness) or even very thin woven, low voltage charged copper wire (virus doesn't survive well on copper and a low charge could enhance this effect) could be an option.
You don’t really want to be breathing through Fibre Glass, mate.
The govt knew exactly what they were doing when they did a complete 180 on mask wearing. They knew the Fashionista American Karens would spring into action and break out the dusty Singer machine from the upstairs closet and get to work. They also knew they would spew shame on anyone who dare question the efficacy of their creations.
Sorry, but kn95 should be worn by risk groups if the safety distance cannot be held any longer
Interesting Video. Thank you. In Germany we have been told, that the cloth masks are Not very good in protecting yourself, but are helping a lot to Not spread viruses and germs to others.
I HAVE AN IMPORTANT MESSAGE...STOP LISTENING TO THE CDC! THEY ARE THE SAME ORGANIZATION AFFILIATED WITH THE ONES THAT UNLEASHED THIS SHIT! PEOPLE IF YOU DON'T WAKE THE HELL UP, YOU ARE GONERS!
The original statement was an acknowledgement that the mask is useless in protecting the wearer from infection (no mask can filter or catch such a tiny thing as a virus). Most people still think the mask has something to do with personal protection. The change of message demonstrates the realization that the mask reduces considerably aerosol transmissions which may contain SARS-Cov-2. Its utility is in community/environmental protection. The CDC is staffed by human beings who are not perfect. Human beings suddenly in charge of disseminating important messages take time to sharpen those messages. Sharpening may come with focus and attention, but it also comes as a result of experience as the context of the message evolves. I blame less the leaders for being caught off guard than I blame the sheeple for insisting on being stupid even AFTER the leaders finally get their ducks in a row.
How much social distance cannot be determined by people, it depends on the pressure of sneeze/breath and the force of WIND! Why do people not see that at the streets things are different, there are cars, smoke and wind passing with different amount of force.
I think it should be, 2-4 ply cloth masks for those who doesn't regularly go outside, surgical for those who regularly go outside, maybe mostly to work...and n95 for our frontliners :/
if you add a face shield it will help to deflect spread,and also keep things from getting into your eyes.
So unless the person is hacking up a storm, the cloth mask isn't going to do much. If they are just breathing normally, than distance alone should be enough.
But it won't make any difference if you get a tiny droplet or a bigger droplet; 10% protection or 80% protection; all you need is one little droplet and it's got you, right? Is it truly worth it? Oh but now some are using the 'overall' plastic face mask. Is that any better?
Sorry all of the Real world (took place with hospital workers on the job using PPE correctly) Randomized trials going back over a decade, with verified rests and empirical Data, show that masks slow the spread of respiratory infections, not 1. The most recent was done by the CDC for the WHO in May of this year. Guess what ? Nope! Now there are some laboratoetruals that show they could bit real world says they don't. It has been known for some time that outside of hospitals and from the RCT even In the hospital, they do little if anything to stop the spread. Consoder this line from a recent, NEJM article on whether to increase mask use in hospital. Oops can't share a photo here.. The quote says," we k ow that outside of hispital facilities, wearing a mask gives little if any protection from infection. When looking at the studies, how they are structured, where they were done, and whether the results are verified matters a lit
“For the most part” This video did not age well.
Would you like to see 5 peer reviewed papers stating that "surgical masks" are at best 30-50% effective at retaining/resisting the micro-aerosols/ microdroplets? Wearing a surgical mask to protect is NO MORE effective than putting out a forest fire with a water pistol. NO," its better than nothing" doesn't cut it!
What about jean cloth? Another question after droplet dried virus drops to surface, will that virus fly and infect
100% 3 layers high thread count as possible and breath. Don't think jeans fit that.
Do big droplets travel further than aerosol?
no, big droplet fall at shorter distance while aerosol float longer. The aerosol float longer because it is light enough to get a lift upward from air turbulence (that you created by sneezing & breathing).
@@xponen thanks. Makes sense, but somehow I was able to hypothesize the other way around as well (bigger droplets -> more kinetic energy). I should get back to ol' physics book during the lockdown :) .
What about if you have those sneezes where they are silent....😶
Anyone else have to rewind because they though she said Dr. Reba McEntire ?
I use helmet every time.
Wipe it with dettole when reache home.
Put my clothes in the washing machine.
And go to bath.
Me too also use mask inside helmet
6:45 okay but what about N95 masks people already had at home from wildfires or home projects? Isn't that better than not wearing a mask at all?
It's okay. It's only bad if you buy it these days when there's a shortage.
That is the premium mask to have, it is rated against viruses. Of course their harder to breath through even with the little respirator on it well for someone with breathing issues anyway. You can reuse it to by hanging it on a hanger in garage and don't touch it or try to re use it for at least 3 days (72 hrs) for the virus to die on it's own on that surface type because you can't wash them. Unless you have an endless supply.
What a great video that answered all that I was concerned about.
over 1000 doctors have come forward and said DO NOT wear a mask
I'm starting to find used masks laying around the parking ramp odlf an airport, and I recognize poor hygiene of people wearing masks that touch all the same stuff I do - such as touch screen check-out machines at the grocery store. I have also seen many people pulling their masks down below their nose. Anything that MIGHT help, but pointedly causes difficulty breathing is a jet negative to me. The Mary Sue's and Karens glare at me over their cloth mask they have used without washing for the last week, while I am conscientious about everything I touch, and if I must cough or sneeze, I'm careful about its vectors. We are cutting off important means of communication, to appease the "may helps". I hope this blows over soon, and we can be able to see each other smile again.
Love this video ! I've been listening and watching for 2 months now and this is the best more complete video ever ! Everyone should keep in mind that the Corona virus is very small ! Very small !
Cheers :)
The virus is very small but it has to have a vehicle to get around and that's the stuff that comes out of our mouths into the air and can be projected long distances depending on how it's projected talking vs sneezing which some people really sneeze big. So it's much bigger than just the virus but it can vary in size depending on what mode of transportation it uses. If that analogy helps.
But why do I have to cover my nose? Shouldn't covering the mouth be enough?
Tob Ias Particles can also enter and exit your nose when you breathe through your nose, which is why it should be covered, too.
@@freddsims648
Many of us wear glasses and cannot see through fogged up lenses when we cover our noses too. Ergo we are constantly fiddling with our masks ESPECIALLY if we are expected to cover our noses too. Supposedly there's ways to adjust your mask over your nose so it doesn't fog up your glasses but I've found those methods to be a crapshoot at best. I'll stick to covering my mouth with my cloth mask and sneezing into my elbow when my allergies act up so I can actually function with vision and not walk into walls due to fogged glasses!
How do you breath, all open areas of the head or vulnerable.
Any thoughts on using blue "shop towels" as a mask, or as part of one? It's hard to find concrete information about it, though some people are using them.
www.sciencedirect.com/science/article/pii/S0048969720330278
😆😂🤣
Wear a mask. Whatever you do 1) be selfless and 2) think about others. That’s the reason people wear masks in other countries. We need to show the world we are just as good. This is not about freedom.
If some droplets are able to get through, would the mask at least slow them down so they don’t travel as far?
Thats why two layers are great. Because maybe they get trought the first layer but then there is the second layer wich is differently woven to keep the particals inbetween. Its like a maze for corona if you use 2 layers (or 3)
A very good question. It seems to me that the answer is almost certainly "yes." Furthermore, if social distancing actually works, then slowing down the airflow from an infected person would be highly desirable. The air carrying the virus particles will not go as far, making social distancing more effective. This matter is seldom addressed in these forums. As far as I can see, it is rarely addressed in research.
06:53 "In terms of efficacy, of course an N95 [FFP3] mask is better than surgical mask is better than cloth mask..."
A respirator does a different job than a sloth or surgical mask. Respirators keep germs out (the button vents breath/germs out to the world) while masks keep your droplets inside so as to not infect those around you.
When you are asked to wear a mask for 8 hrs a day, is that doing any harm at all to my health?
I mean, unless you accidentally swallow it and start choking, no there really shouldn’t be an issue lol
It shouldnt be unless u r wearing it while excercise or lift heavy object
Yes it can. Wearing a mask means that the air you are breathing has an increased CO2 level. The standard for masks is that the CO2 levels in the mask can be up to 1%. In the UK (and Europe) the maximum level for the workplace is 0.5% averaged over the working day. If you are wearing a mask for 8 hours in the UK, that would be in breach of health and safety laws
I would have more than one and switch to a fresh one after a while because your mask will get harder to breath out of as your moisture etc accumulates inside the mask. If you are wearing a cotton mask it should provide better breathability.
@@mickbacon8542 Hopefully you are removing it at times when you are not around people just don't touch the mask put in on and off by the ears.
Me and 12 other dudes wrestled a dude for an hour who turns out had covid. No dudes except for infected dude has corona. No we don’t wear masks when we wrestle. Dude! Go figure
i just search for old sound cards and i end here
#falsesenseofsecurity. Stay at home. That's how you slow the spread.
Till when?
Jamie Easley Yea Lets just all quit our jobs and let the government pay all our bills and feed us and our children!
Not wearing any mast and being present with boundaries and self a care , most importantly common science. AYFKM 🙀
You need to see the video of the firefighter showing how ineffective masks - even surgical masks, are for droplets. The only ones that are any good are the N95s. Btw, thread counts are deceptive. Used to be 200 count was triple thread 200 count one way. Now 200 count can be one thread both ways - or single thread 100 count one way. Gone are the days that 200 count Sears sheets meant you were actually getting the quality equivalent of1200 count single thread both ways.
This was actually really excellent thank you
If you can breath through a mask germans can pass through it as well.
Not only germans, but poles and french too. :)
If they buy the N95 mask themselves, it’s 100% their right to wear it. Stop this madness thinking people shouldn’t be able to buy and use their own property.
good for halloween or robbing a bank
A KN95 is NOT an N95.
I have to differ with the part of no studies have been done; that is not true. Here's the link you can check it out yourself. www.sciencedirect.com/science/article/pii/S0048969720330278 Also I learned you want 3 layers of 100% cotton and the higher the thread count naturally the tighter the threads are woven like 180 thread count. Not sure what a T-shirt would be but a cotton sheet comes in counts like that. Preferably with a metal nose piece so you can eliminate gaps around the nose and it helps you if you wear glasses too. I still think if it can stop droplets from leaving the mask it should do the same for penetrating another persons masks, just like N95 masks are rated to keep stuff out not in. Wash with hot water and dry by machine. If someone is going to wear it for many hours, might want to change to a fresh mask during the day too.
I add tissue inside of my cloth face mask.
please use the metric system. especially if you talk about science!
The video is made in the United States and intended for the general public. We don't use metric unless we are in science generally.
According to OSHA, employers are supposed to provide a working environment that has a minimum of 19.5% oxygen, which is critical when you work on submarines, for instance. I saw a video recently that showed a submarine worker who had a meter that measured the oxygen level, and he put the meter inside of his face mask. Within 2 seconds, the alarm on the meter went off letting him know the level had dropped below 19.5%, so he checked the meter and it read 18.6%. When your brain doesn't get the amount of oxygen it needs, it does irreparable brain damage and it quickly leads to death. If you are required to wear a mask, I would suggest you take frequent breaks so you can get some much needed oxygen, despite what so-called health 'experts' may say.
What if the mask dry the droplet and the virus 🦠 escapes flying to be airborne instead of heavy droplets fall in the ground
You are supposed to wash them after using them. Simple soap and water will destroy the virus.
You know, vacuum cleaner hepa filter replacements are cheap and prevelent and can be cut apart and made Into 100% effective mask. They make furnace filters at any big box store that actually trap viruses (they are the most expensive ones). Air purifier filter replacements can be made into masks. Too bad the average human intellige level is so low. I don't bother wearing a mask 90% of the time though. I suppose I should but we go through flu season every year. This whole thing has been exaggerated exploited for various gains anyway.
indeed it has and I’m healthy so the virus probably wouldn’t do anything more than make me feel like crap for some time
would something like a 3M 7001/2 with detachable cartridges be better? using a P100 pancake cartridge?
3M has ratings you can go to their website and look it up.
Wow, that is terrible advice. NEVER REUSE A MASK WHEN IT'S DIRTY!
Now that we are know who disliked the video 😂😂
Any testing for co2 levels in your blood before and after wearing an n95 mask all day? Hypercapnia research would help.
Your 02 saturation probably wouldn't go down too much, and CO2 wouldn't go up to much either
@@endergamer794 you would also adapt probably
GoddardsJournal has a really good video review on this: Face Mask Science - Literature Review
Def recommend :D
How much more effective would it be to wear a double mask vice wearing just one? It occurred to me today when I went to the store to wear my regular surgical mask along with my bandanna type face covering?
It doesn't hurt you to properly wear a mask. There are then 2 possibilities. It either helps slow the spread or it doesn't hurt. Therefore is simply selfish and arrogant not to wear one. Period. It doesn't matter which side of the argument is correct.
There is a third possibility: they cause harm. If masks cause people to engage in more risky behavior (such as getting closer to people, reduing their handwashing etc) then they are causing harm. If a wet cloth mask significantly increases the likelihood of transmission from the mask into the air, or from the air through the mask, then they cause harm. If a mask causes droplets to be propelled up and out the top, higher into the air, keeping them suspended longer, they cause harm.
The CDC changed their advice not because they thought something was now safe, but because it would force more people back out into the world.
Disjunctive reasoning doesn’t work if you exclude a whole possibility.
But for governors enact executive orders that fine people for not wearing masks, even wholly ineffective ones, IS harmful.
You can use a coffee filter
I wanted to make video what a person felt as CoVid patient for people awareness! If ACS and Samantha contact me. I am ACS membef too
Cuomo on CNN already did it on himself every night from his guaranteed basement.
Thanks alot.
🙏🙏🙏🙏🙏
Amazing video!
What about your eyes?
That's a good one because no one talks about that, but there are plastic protective glasses at home depot you can buy because that is another open area too.
Seriously?
Rather having hundreds of expert and video with thousands of different opinion . Can some lab make a machine with that tests the most used material. Along with being able to have health breathing .
Also update the video what’s recommended at this video date will infect or kill people .
Thank You ❤️
But our eyes
Great content and video :)
GREAT VIDEO ❤️
I just found this video, it is great but maybe it is cultural thing but why people are soo so so mean to the uploader, I will try to explain in my non native language as best as I can, they take the frustration and fear on the uploader.
Common sense, which is not that common at all, is try as much as you can to practice
social distancing,
wear the best mask you can have,
and believe in destiny if it is your day it is, if you did well in this life no fear .. either that or complain and project your negativity and frustration on people who work hard to inform .
Love and prayer for the person behind this video. Salam
great video thanks
Great job
What if there is a wind?
None of them know wtf they're talking about, but people latch onto the masks because it makes them feel better and gives them something to talk about.
Yup, just gonna ignore the experts here?
So just because you don't understand you're just going to down play it to others shame on you.
@@tweetiebirdI have a graduate degree in materials engineering, I reckon I understand the transmission of particles through different materials a whole lot better than you.
@@tweetiebird Is that suposed to be me or the mantis dude?
The video was nice but I actually really watched it full because I started to crush on her 🤫🤭😂