Do Masks Really Work? (With LMFAO)
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- เผยแพร่เมื่อ 18 ก.ย. 2024
- 🥼Instructions for replicating this science demonstration 🥼
1. Buy some agar petri dishes 🧫 like these: www.amazon.com...
2. Do not open the petri dishes until you are ready to do the demonstration. It is very, very easy to contaminate them.
3. Find a way to hold the petri dish near your mouth, such as leaning it against a box on a table and then sitting at the table.
4. Put on a mask 😷 (or not) depending on which part of the demo you want to do.
5. Open a petri dish VERY CAREFULLY and make super sure not to touch the agar because that would contaminate it immediately.
6. Sing into the agar! 🧑🎤
7. Close the petri dish, turn it upside down (to prevent condensation from forming on the agar), and put it in a dark box and leave for 2 weeks it in a location that is around 80-90 F (26 - 32 C). A warm garage or windowsill would work well.
8. Look at the results! Occasionally you will get a bad result due to bacteria floating in the air. Try repeating the demonstration to find a typical result.
9. You have amplified bacteria 🦠 (whoa!), so sterilize it by putting some bleach in the petri dish and waiting 24 hours before throwing it away.
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#LMFAO #COVID #Masks
🙌 CREDITS - ONE TRILLION THANKS EACH TO: 🙌
* Rich Davis, PhD
* Paul Sobota
🎹 MUSIC IN THIS VIDEO 🎹
Unauthorized use of copyrighted music!
* "Party Rock Anthem" by LMFAO, featuring Lauren Bennett and GoonRock
Selections licensed from SoundOfPicture.com:
* "Violet" by Podington Bear
* "Gizmo" by Podington Bear
Selections from TH-cam Audio Library under Creative Commons License
* "Side Steppin" by Otis McDonald
Please and thank you, kindly read this FAQ before commenting.
I have received some great questions in the comments here and on social media, and I have been appreciating people's curiosity, suggestions, and civility. It's completely reasonable to have concerns and questions about whether masks work. From those discussions, here is my FAQ, which I will continue to update with your questions.
Q. This shows bacteria, not viruses.
A. Very fair point, I chose this "simulation" demonstration because this can be replicated in the home without a virology lab. COVID-19 is expelled through respiratory droplets though, and oral bacteria travel in the same droplets. So I consider it a fair simulation.
Q. The viruses are smaller than the pores in the cotton mask, won't they go right through it?
A. Great topic. The viruses are definitely smaller than the pores in the cotton mask, but when the virus leaves your mouth it's thought to generally travel in respiratory droplets, which are larger. As long as the mask can stop the droplets, it can stop the virus from spreading. This demonstration shows that the masks are effective at reducing the spread of those droplets.
Q. The masks I bought come with a warning label saying they are not designed to prevent COVID-19.
A. Excellent point. Yes there are a lot of warning labels that have to be put on products in the US for liability reasons. Based on the studies I've read, it looks like the masks are best used as "source control" meaning they stop the virus coming out of your mouth. If you're around pre-symptomatic persons who are exhaling virus-containing droplets but who are not wearing a mask, the air can be filled with these droplets, and even if you're wearing a mask you can breathe them in as they come in around the side of your mask. The highest use of the mask seems to be to stop those droplets at their source. So we all need to wear the masks for this to really be effective.
Q. How can I believe a basic cotton mask will work to prevent a deadly disease, when we require clearly superior N95 respirators for less dangerous tasks like woodworking and construction.
A. I'm very happy to see this question come up! If we could all wear N95's that would be much better, but due to the shortages we have to use the best available alternative. Now with woodworking, you want to prevent yourself from breathing in very tiny dust particles, so the mask needs to seal around your face and the filtration has to be very, very good. With COVID on the other hand, the goal of the masks is to catch droplets as they shoot out of your mouth. They get absorbed by the mask so they don't get transmitted to others. So it doesn't prevent you from catching it.. instead it prevents you from spreading it. We all have to wear masks for this to be effective.
Q. Where are the research studies that show masks actually work to slow the spread of a virus?
A. Here are six such studies that show that masks, along with other non-pharmaceutical interventions (NPI's) such as hand-washing and social distancing, really do work to slow the spread of a virus:
* pubmed.ncbi.nlm.nih.gov/22295066/
* pubmed.ncbi.nlm.nih.gov/22280120/
* pubmed.ncbi.nlm.nih.gov/19652172/
* pubmed.ncbi.nlm.nih.gov/22188875/
* pubmed.ncbi.nlm.nih.gov/32512240/
* pubmed.ncbi.nlm.nih.gov/32355904/
While I am NOT denying the need for masks.. Is there a study that somehow isolates viruses instead of bacteria in these petri dishes?
@@LinasMuliolisC21Homestar hi! That's a great question. Thank you for bringing this up.
I don't have access to a virology lab to do that test exactly, but fortunately studies have been done that do show that masks can help to reduce virus transmission (such as with the influenza virus). I'll paste some links below. What I've seen is that when these studies are done in a medical setting (mask wearing happening in a hospital), they're more effective than when they're done in a general public setting (mask wearing happening at a college dorm, for example). I suspect the reason is that many people wear their masks incorrectly (below the nose, around the chin, they remove it to talk to someone, stuff like that) but in a hospital people follow proper mask hygiene more closely. South Korea is a good example where people are very serious about wearing masks correctly, washing hands, and keeping distance from others in public settings, and their COVID deaths have been nearly zero for months.
* pubmed.ncbi.nlm.nih.gov/22295066/
* pubmed.ncbi.nlm.nih.gov/22280120/
* pubmed.ncbi.nlm.nih.gov/19652172/
* pubmed.ncbi.nlm.nih.gov/22188875/
* pubmed.ncbi.nlm.nih.gov/32512240/
* pubmed.ncbi.nlm.nih.gov/32355904/
Thank you for creating this, Ian! I have a family member that has somehow lost faith in basic science. Your friendly, entertaining, easy, and undeniable experiment is a perfectly nonthreatening way to connect with someone that's stuck in a fearful mind state. ♥ PS - Great moves.
Thanks Jordan for using "great moves" to describe my uncoordinated thrashings about :-)
Yeah I can totally get how people can become disillusioned with science. It's messy and sometimes we get conflicting results and have to repeat stuff and dive deeper until we really understand things. I tried to make a video that would respect people's intelligence and just be honest about this stuff. Hopefully I got close to that goal.
Heck yeah! Saw this in the Facebook group hahaha. Awesome. My group just had our data validated and tested from the American chemical society to prove same thing as well as filtration efficiencyfrom outside in. Also, some interesting things to note; particles about 3 microns in size, basic respiratory droplet, can take up to 35 minutes to land, and 1 micron sized can take 2 to 4 hours to land...
Don't give up your day job to pursue your dream to become a professional dancer.
Haha I will happily take your advice :-)
Showing those show choir moves! 🤩😂 awesome stuff
It's all I know! Hahaha
As alway, great video Ian! :) I find the general flow of constantly changing and sometimes contradicting information frustrating and I think it will be super interesting to look back in a few years time to understand how right we were about some understandings and how wrong we were about others.
Stay safe everyone!
Brandon thanks for the kind words! I hear you on that... as a society we are being forced to make decisions during a crisis with imperfect information. The degree to which there is universal scientific consensus on various methods to reduce the spread of the virus currently varies greatly with the method (e.g. hand washing, public mask wearing, social distancing, isolation and quarantine, lockdowns, antivirals). We don't know for sure which ones are the crucial and necessary preventative steps. Personally I'm just doing all of them (except antivirals, can't get 'em) as best I can. However, this is also a once in a lifetime opportunity to do controlled experiments during a public pandemic. Not a demo like my video here, but properly randomized controlled studies. I'm eager to see the results of a number of studies happening right now. What a scary but important time to be alive. Stay safe friend.
Fantastic! Thank you for creating this wonderful & fun science experiment. 😷
Yay. You are fun. Also love the bow tie/shirt combo. And the dancing. And especially the science.
TechnoChic thank you so much, that's super kind of you! I just subscribed to your channel, love the projects that you do. Keep it up :-)
Thanks! You too! I added this video to the top of my “Science Awesomeness” playlist. 😎
This is great! Thanks Ian!
This is brilliant, Ian!!!
Hey thanks friend! You'll be happy to hear I did this with typical "nutrient broth agar" or "tryptic soy agar" which don't use any animal products. No gelatin and or blood.
@@iancharnas Great tip, thank you!! Rock on, love seeing your creativity take so many forms. - Michelle :)
Nice work, young man.
Thank you Joel! That's really encouraging for me to hear.
To be fair, bacteria are quite large compared to viruses. Medical grade masks are designed to stop bacteria. Droplets aren't the only source of transmission either. Aerosols should also be included the discussion, as they may represent a more significant route.
While I appreciate the effort it takes to produce this type of content, the fact is, there have been no randomized controlled trials on mask efficacy outside of medical facilities. On that point, masks have been studied extensively for decades, and the science is hardly settled.
Here is one of many examples: pubmed.ncbi.nlm.nih.gov/16295987/
One of the few trials involving cloth masks: bmjopen.bmj.com/content/5/4/e006577
I'll admit that masks seem like common sense mitigation, but there is little evidence to suggest they are effective.
ntldr2005 great points. I'm watching the new studies on aerosols closely and am curious to see the results. We have some anecdotal support for mask-wearing in the public, such as the two hair stylists in Missouri who tested positive for COVID-19 but wore masks consistently and properly and managed to not spread COVID to any of the 139 clients they saw. Also, the countries that have done mask wearing, hand washing, and social distancing well (New Zealand, Japan, South Korea, Taiwan) seem to have dramatically halted the spread of the virus. However, you sound like a science-minded person so like myself you probably want a more controlled experiment and something more like data and less like anecdotes. What I'd really love to do is to be able to take pre or early symptomatic persons (at potentially the largest viral shedding phase) and have them speak for 10 minutes into a plate (no agar) both with and without a cotton mask. Then perform viral testing on the droplets that collect on the plate, and be able to show clearly what log reduction was achieved with a simple cotton mask. That would, in my mind, represent a very real-to-life scenario of the impact public mask wearing. Much better than the simulation I did in this video.
@@iancharnas Thank you for the response. As you say, there are anecdotal support both for and against the use of masks in public. The Lake of the Ozarks Memorial day party comes to mind, with no masks, and no mass spread. Yes, I'm more interested in proper studies and empirical data to justify statewide lockdowns and mask mandates. I'm looking for correlation between mask usage and cases. California is a great example. They have one of the highest levels of mask usage in the country, yet their cases are surging. New Zealand is interesting, but I think all they've done is postpone their pandemic by locking down so hard. Japan and the Philippines have very high mask participation rates and are now experiencing case surges. Taiwan and South Korea seem to be outliers.
The bottom line is, once data normalizes between different geographies, those areas seem to experience very similar epidemic curves, regardless of the types or levels of mitigation. Poor policies may be a stronger variable, particular those that force the infected into their homes (or nursing). That would make some of the mask debate a moot point. Thanks again for the discussion!
@@ntldr2005 Hi, I appreciate the conversation and the civility.
The examples you posted were very interesting, and I hadn't seen those before so thank you for introducing me. The first example was a research study about whether wearing surgical masks lessened wound infection rates, and the conclusion was they do not. There's two ways to read that - you could say that masks are ineffective, or you could say that respiratory droplets ending up in wounds does not appear to be a statistically significant vector for disease. My hunch is the second one, however without further evidence we couldn't stake an objective claim either way. The second example was a research study about whether cloth masks were as effective as medical-grade respirators at preventing someone from catching an influenza-like illness (ILI) with the results being that medical grade respirators were better. Certainly, I wouldn't argue that. If there were enough FDA approved medical respirators or NIOSH approved N95 respirators to go around, then we should all be wearing those because they are demonstrably better. From my admittedly brief reading, neither study aimed to measure a reduction in viral transmission achieved by a cloth mask.
Fortunately, I did find a number of randomized controlled trials on cloth mask efficacy outside of medical facilities.
Here's the first one that came up on my search, which shows significant reduction in transmission of influenza-like illness (ILI) in the group of college students that wore face masks and washed their hands. I think this is especially applicable because it's cloth masks, reduction of virus spread, and outside of a medical facility.
pubmed.ncbi.nlm.nih.gov/22295066/
Pretty cool experiment Ian! You rock as always pal. Hopefully this would help persuade some anti mask people to change and protect each other. One more thing....you got moves buddy...had no idea. How come you never danced at my parties? LOL
Fabrice! That is super kind of you to call my thrashings "dance moves" - you are too kind! Like Gandhi level. To anyone who doesn't know Fabrice, he's basically the world's greatest DJ and a super sweet dude.
Anti maskers should insist their surgeons don’t mask up when operating on them.
Good job!!
Party Rock Anthem is the Anthem of 2020. Both are apocalyptic in nature
What about putting a mask over the agar dishes? Then a mask on you and the dish and finally a mask on both locations and increase the distance to 1.5m.
Oh that's an interesting idea. So the mask on the agar dish plus a mask on the person would represent two people wearing a mask, yes? I like it!
awesome I love it as always your videos are great!
Now do one to see if vape clouds transfer more than normal breath :)
Oh my god, vaping. I do not vape but I would love to name a vape shop. Vape Escape... Vapes of Wrath.... Darth Vaper....
My idea for more air to come through and keep viruses away: A vertical hermetical pipe hanging from your mouth at least one foot and a very light filtration material at the end, this would work as a gravity separator and droplets would not rise. Could this work?
Hi Luis, interesting idea! I'm not sure if this is similar to your idea, but I saw a few projects come out that used inexpensive snorkeling masks with HEPA filters attached. Check it out: oceanreefgroup.com/covid19/
@@iancharnas not quite but much more simple, just a hose with no much filtering going upwards so there is gravity separating. I should try to make a model and upload it...
Issues with his “experiment” for two reasons.
1) lack of controlled environment, it is possible some of the dish may have external or alternative contamination.
2) we did not see (in neither this video or Fast Fwd version) the growth of the “bacteria”. So how can the video assert the dish is the one he says it is?
So basically we are supposed to trust a cut and edited video because a guy in a lab coat says so?
Last thing, this video assumes that the guy is a scientist and that it was all done properly. I think people also forget bacteria is needed and necessary for everyday functions of the body.
How do we poop without bacteria? How does the stomach break down food? How do we grow natural immunity?! Yea ALL those bodily functions require bacteria....
#dontheSHEEPLE
Hi, and thanks for the comment and the questions. I appreciate you taking the time for civil discourse.
1) You are indeed correct, this was not performed in a sterile environment, because I did not have one available. I think that's a good point to bring up and I might add this to the FAQ. Thank you. In order to account for the non-sterile environment, I repeated all of the trials 3 times (not shown in the video) with agar from 3 separate manufacturers, and got the same results each time. I did this because I didn't want to publish something that you couldn't reproduce at home, so I had to try it a bunch of times to make sure this worked reliably. The more times we repeat the experiment and get the same results, the greater our confidence in the results. On average, non-sterile environments would add a background level of bacteria and (more-so) mold to all plates. If I can repeat the experiment many times and get the same results, it becomes increasingly unlikely that I'm getting outlier type results caused by a non-sterile environment.
2) Regarding the issue of trust, the cool thing with this demo is that you don't need to trust me. Great science can be replicated. It's part of the foundation of objective truth. I included instructions for you to replicate this demo at home (look in the video description), so that you can prove to yourself that masks and social distancing really do work to stop respiratory droplets. It's not perfect, but it's significantly better than doing the opposite. I think it's reasonable to be skeptical about masks, and by replicating this demo an objective person can see the truth for themselves.
@@iancharnas Nice. I was feeling mean for wanting replicates!
@@paulfennell2646 that's a very fair critique and I would ask the same :-) I tried my best to balance being objective and being compelling. I left a lot of facts and info (like the repeats with several types of agar) out of the video for watchability. They were difficult decisions to make, but I figured we could discuss issues like this in the comments. I've been very happy to see the civility here. It's refreshing!
But thats a good thing if extra contamination has occurred because it shows that EVEN wearing a mask in a non sterile environment, hardly anything grew at all. Sooo, still shows it works
Ian sei Italiano?
ciao! Vengo dagli Stati Uniti ma sto usando un'app di traduzione
Japan is having an increase again, in spite of masks. Does this not prove that we shouldn't wear masks? Bacteria grows, viruses don't, so this demonstration shows you have Bacteria growing on the inside of your mask, a definite health risk. Also, does not capillary action of droplets cause virus to be exposed out of a droplet?