KGW investigates: Hand sanitizer vs. soap and water
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- čas přidán 6. 09. 2024
- During cold and flu season, having clean hands is one of the most important steps you can take to avoid getting sick. So, which is better: washing with soap and water or hand sanitizer?
To find out, we conducted a test at the Providence Regional Microbiology Lab in Portland.
Pathologist Dr. Margret Oethinger doused my hands with a nasty brew of E. coli. Then, I dabbed my germ-infested hand onto an incubation plate.
For the first test, I used just a small amount of hand sanitizer. It was about the size of a dime. I rubbed the hand sanitizer around on my hands until it was dry on the skin. Then, I dabbed the petri dish.
After washing thoroughly, we repeated the exercise. That meant more E. coli. This time I used a lot of hand sanitizer: three pumps from the dispenser. It was literally dripping from my hands. It took some time for the alcohol-based sanitizer to dry.
The next test involved washing with soap and water. We repeated the steps: First, I washed thoroughly, then doused my hands with the E. coli mixture. This time, I washed with soap and water. It was brief, probably about the length of time most people spend at the sink. I rubbed the soap around, then rinsed and dried with paper towels.
The final test involved serious washing. I followed our same routine. This time, I washed with soap and water for nearly 30 seconds. I scrubbed every finger, around the nails and the front and back of both hands. They felt really clean.
Dr. Oethinger placed the samples in an incubator at the lab. Then, 24 hours later, we returned to see the results.
Heavy hand sanitizer was most effective. The incubation plate showed little growth when I used a lot of hand sanitizer.
“The hand sanitizer would have an advantage,” explained Dr. Tobias Pusch, an infectious disease specialist at Providence Health & Services.
The Centers for Disease Control and Prevention recommends alcohol-based hand sanitizer that contains at least 60 percent alcohol. You should put enough sanitizer on your hands to cover all surfaces.
“As long as you have the product in your hand you want to keep your hands wet until it slowly dries out,” said Dr. Pusch.
Heavy hand washing with soap and water was also effective, although it showed some E. coli growth on the incubation plate.
“Regular hand-washing with soap doesn’t necessarily kill the bacteria off, it’s more mechanical, cleansing,” explained Dr. Pusch.
Hand washing reduces the amounts of all types of germs, pesticides and metals on your hands according to the CDC.
Health experts suggest you scrub all surfaces of your hands for 20 seconds. A good way to reinforce good hand-washing is to hum the “Happy Birthday” song twice.
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I think they should have used 2 different people because after the hand sanitiser test, the subject's hands are briefly washed and residual hand sanitiser may affect the E. coli that was placed a second time.
Sponsored by Purell
Aowkoak
True. Fake as hell. He didn't even take time to spread soap on his hands, he just plainly washed it down with water. Judging from his "method" and the results, one could make a sound argument that plain water is at least half as effective as Purell...
Penis
MORE AMERICANS ARE DYING THAN THE POOR IN INDIA.
Thank you for this worthy information
Personally, I prefer washing my hands using soap. Though, it seems to take longer time while washing hands, I like the final result in which my hands are clean and dry. Because in my opinion, dripping much of hand sanitizers would feel like my hands are wet and slippery, whereas I believe they're clean.
Anyway, many thanks!
You wear ring on hand. Bacteria will hang there.
He doesn't rub the soap all over hands,and for only 2 seconds before imediately plunging into the running water,c'mon silly waste of people's time
Seriously, even in the "heavy washing" he rinses away the soap before he can scrub his hands...
Did you even watch the entire video and understand it, you fucking moron?
@@brotendo I guess they did not. Lol
@@brotendo Mark dont be an ass, I watched the entire video and agree with peter. What exactly am I a moron for? Noticing experiment flaws? How many people do you think cover their hands with sanitizer like that and leave their hands out to air-dry? NONE, you really didnt notice how bad of a hand washing job he did?
@@cosmiks9939 lol this video has been brought to you by purell
Doctors should really wash between patients. They have sinks in their office and yet I've seen my doctor repeatedly use sanitizer then gloves but you can still cross contaminate.
Shannonm75they are supposed to just use hand sanitizer
"The creatures outside looked from pig to man, and from man to pig, and from pig to man again; but already it was impossible to say which was which."
George Orwell.
Washing your hand is the best method to combat the coronavirus b/c the outer cell wall of the virus is made up of lipids - which is a fat. How soap works: it has 2 components, one that binds to water and one that binds to grease/oil on a molecular level. What soap does, essentially, is it will break up the virus' cell wall b/c the soap will bind to the fats causing the virus' inside to break apart. And b/c it has nothing to hold it together, soap will "de-activated" the virus b/c it needs the center information to reproduce in the infected body. So wash your hands ppl! Just practice good hygiene.
shad0wCh8ser kurzgesagt??
Keep in mind that the hand washing test we see used paper towels to dry. Use a regular bathroom towel and you are re-inoculating your hands- smearing germs all over them again. I need to get some more paper towels at Costco.
The fact that he says "almost 30 seconds" like it's a really long time concerns me. I've never heard of washing your hands for less than that.
Walk into any American restroom at a movie theater, airport, or bar. I see lots of dudes use the restroom and then walk out without washing, or they barely rinse with soap and water for like 5 seconds and then leave. Disgusting.
They say at least 20 seconds so I don't know how you have never heard otherwise.
I see people only putting soap on one palm and immediately rinsing it
Soap > Sanitizer ( Ref : WHO , CDC )
in our health care facility we teach to wet the hands first before applying soap....otherwise the germs get trapped in the little cracks and crevices in your fingers, palms and back of your hand. Our environmental studies here have proved that soap and water is the most effective way to clean your hands...this method is what the CDC recommends as well
this lab done this test without indicate how much ml hand soap used and and also the volume of hand sanitizer. The hand soap show in the video already diluted. I remember my degree thesis, if I done this lab work like this, i think I can't even graduted.....haha
You need to learn common sense too, then.
I think the reporter said "alotofit", check again.. 02:36
Wow..thank you. This vid is really helpful👍🏻
Would the scrubbing be physical removal and not chemical. Why was there not a water scrubbing variable intruduced?
here one to clear about what he did in this video: he didnt touch anywhere/water tap during using sanitiser but he touched the tap after hand wash. one mistake he did is he dilute the soap immediately after the soap applied to his hand.
to precise examination , after u put the hand sanitizer stay out of home and test the bacterial growth. u will see the germs attracted to the hand due to all geletin stiffs. if u wash your hand properly and stay outside for an hour, u wont see the bacterial growth coz there is nothing on your hand. may be they r scared from the hand sanitizer company. ethanol is faster than soap but gelatin will attract the microbes. so the best solution is just make 70% ethanol solution and add to the spray cylinder and spray daily. thats more effective.
can improve the experiment by letting hand dry by its own after washing hands. Because the tissue is not sterile and might affect the experiment
This experiment definitely wasn't done properly, he didn't wash his hands in a proper manner. I'm pretty sure this video was sponsored by a hand sanitizer company.
And now I know why hand sanitizer are not available near any store near me 😅
1:02 I dont think most people wash their hands like that as you say
Yeah. He is a dirty pig. He washes less than I would do when I was 6
Me : I’m not washing my hands again
My parents : soap and water is better and hand sanitizer is useless
Also me : *shows them this video*
That's ridiculous, this video is no scientific proof. Instead of lathering the soap as doctors recommend, he almost immediately diluted it with water. I'm pretty sure this was done purposely because a hand sanitiser company sponsored them. This video is more detailed czcams.com/video/fRqJaZO5yW8/video.html but nevertheless, don't rely on CZcams videos and always follow the WHO's recommendations.
He suppose to rinse,soap,lather,scrub,wash down
Him: soap,lather,scrub,wash down
Great video. I now can say I've seen one media in the past decade that I feel was done correctly and pragmatically.
I just subscribed to your channel
10th sub
The way he heavy wash with soap is just the worse way to do it......... The soap should be on his hand and rub thru every part of hand.......
What would happen if you just used hot water was what i was looking for you can't count it out unless you tried it before it's simply ruled out ✌
Great Education Video... Thank you... 🙏. from Thailand...
Lather with soap, preferably carbolic bar soap very well for
30 seconds, much more effective than 100% alcohol-based hand sanitizer
It is not 100% but 60-70 because over this number dosen't kill germ
Is the soap that you used is antibacterial?
The only problem is that its sold out and I'm not paying 200 for something they normally sell for 6
Great video.. and great information
Before you “poo-poo” washing hands, it would be interesting to know exactly how much time it took to work in the copious amount of 3 hand sanitizer squirts plus the time it then took for it to completely evaporate. Something tells me it was much longer than 20-30 seconds. People typically DON’T wash hands for 20-30 seconds - I see that error all the time in the foodservice industry - however people also DO NOT use hand sanitizer the recommended way demonstrated here.
Perhaps if hands were washed for the same amount of time it took the reporter to use all that hand sanitizer, the final petri dish results would be different. I would bet money on it.
The sink doesn’t have handles. We have no idea what temperature he’s using in the water.
dont forget there is good bacteria that our body needs to help fight viruses that you also kill with sanatizer. thats why you shouldnt over sanatize things. I noticed that was not mentioned.
Okay he emptied basically half the bottle on his hand that's pretty hilarious
I use baking soda to clean my house I wonder what it does ?
sanitizer will kill all flora of skin too. so clean with water and soap is better.
tbh hand sanitizer and soap and water are both great options to kill germs but hand washing is better but sanitizer is a great alternative.
What about lime soap for hand washing?
Valuable info against COVID-19 ;)
Stay safe and take care everyone.
U too 😘🦄🦄
Informative. Keep producting factual stories like this.
the solution is to stop living in fear
Thank you. This video helps this time of 2019-nCov virus outbreak. I've learnt a lot to protect my loved ones.
E-coli is bacteria not virus...could there be differences?
@@marcwong4860 covid-19 is virus. But it is due to personal hygiene. Must keep having personal hygiene to super clean. And ppl who are sick must wear masks. Else they spread it to others if they cough without the masks still covering their mouth and nose
Your point makes sense. I learnt that alcohol doesn’t kill everything-bacterial spores, some protozoa, and certain viruses aren’t affected.
@@marcwong4860 Dr. Berg said "You can’t kill a virus because it’s not alive in the first place. It’s a piece of genetic material wrapped in a sac and then invades your cells when your resistance is low; insulin resistance creates lowered immunity. " also I learnt that alcohol doesn't kill everything
@@myo3939 That was only in the sense that it is not "alive" in the first place; the entity can certainly be "killed" e.g. soap, alcohol, UV-C exposure.
Yes finally, I can defend our thesis why hand sanitizer and not soap andnwater
Yes! I can hold to my preconceived belief, quick dont research any further, especially about Virus's
Okay, first, he got E.Coli on the purell pump, not to mention the outside of the petri dish. (And also he should have taken his ring off.) Then he put soap on his palm of his hand and immediately rinsed the soap glob down the sink. Don't you know you're supposed to wet your hands, then pump soap on your hands and then rub for 20 sec., get a good lather, and then you rinse the soap and germs off your hands? I'd also suggest you use the 20 sec. soap lather to also wash the sink knob so you don't reapply E.Coli back onto your cleaned hands. Basic hygiene. Anyone who argues with that is an unsanitary person. I've witnessed plenty of bad hygiene habits in the public restrooms, that's if they even wash their hands! Ppl are so lazy.
This works for bacteria not for viruses. Soap and water works best against viruses.
Sometimes it needs to be 70%
Loved this video...
I love Hand Sanitizer...💓
What temperature was the water?
Thanks atb
Oh just showed me was that somebody doesn’t watch their hands
Ummmm...... isn't E.coli poop?
if yes then
.......EWWWWWWWWWW
*Germaphobes has entered the chat*
TIME TO GET HAND SANITIZER.
That's me
*mysophobes. "Germaphobe" is a silly colloquialism.
Everyone rush to the store and start buying up and hoarding hand sanitizers!
uhh he touched the tap tho? this is inaccurate
Sponsored?
That guy can't wash hands!!! He puts the soap under water immediately! First you should rub your soapy hands for the soap to reach everyting then put it under water.
how would you measure the changes
Lots, little, none.
@@louf7178 yeah but like, with numbers
@@TobySullivan Microscope and count them? Assistance with high resolution photography and image recognition? There's no "magic".
@@louf7178 surface area
@@TobySullivan Maybe light intensity per square.
Its all about business 😂
cool.
**intense coughing**
oh hello, how topical
This is a flawed experiment. It was widely known that soap and water is the best. He didn't even scrub with the soap and washed off the soap immediately. So amateurish
It is meant to have typical-use scenarios.
@@louf7178 I'm afraid you are projecting a flawed scenario. Normally people does rub with soap much longer. If you think yours is the typical scenrio, then you shld do two videos. One just a cursory wash and the other wash longer. Your vid doesn't stand the test of scientific evidence that soap and water is better than sanitizer. Yoiu are giving people a truly false impression. Pls remove your vid.
@@divinemoment5 I don't disagree with what you're explaining, but you're taking this WAY too far; it is not preparation for surgery. It was a range of typical scenarios and their results, which is informative for daily knowledge and practice.
@@louf7178 Granted your vid was posted in Feb 2018 where covid 19 not arrived yet. Now with this virus thing, touching your face with unclean hands is matter of life and death. Don't say something to be different from scientific research. It just make you look foolish.
I think it will be MORE effective if you wash your hands 1st then use sanitizers. Hahahaha
How you even know they telling the truth could be a bunch of propaganda
One video says soap is better, one says sanitizer is better. I’m just gonna keep using hand sanitizer after washing my hands . Problem solved 👌
I use an anti bacterial soap it would be good
Soap and water are better than hand sanitizer, he didn't wash his hand properly
Why not just pour alcohol all over your hands
It evaporates quickley; it needs the 20-30 seconds exposure at 60% solution.
@@louf7178 Oh for real? What about the 70% Isopropyl Alcohol or whatever? That also is not good enough to consider your hands clean?
@@lolhahah21 That's greater than 60% so it woukd work, but plain alcohol would evaporate quickly and much quantity would be wasted.
Okay, but I just watched this dude put soap on his hands...and then immediately put them under running water BEFORE scrubbing. Dude. Wet your hands, apply soap, scrub into a lather for half a minute, THEN rinse. Holy shit, I can't believe the lack of common sense.
Waw...
There must be check on goods by govt nasty people making business even in this time of need.
thank you for the information lol
I don’t care how many hand sanitizer dispensers are in a bus terminal or on any train I’d rather do it the old fashioned way of washing my hands with soap and water.
Are you serious? He barely had soap on his hands, all 2 seconds. Purell paid advertising
Yeah he took the soap to transfer it to the sink.
@@lolhahah21 pretty much
The tisue have germs
*trypaphobes and germaphobes have join the chat*
Man this guy really predicted COVID
Diseases have existed before covid... the fuck you on about? You’re supposed to always wash your hands like this.
Mga bogo guard sa gaisano grand mas ok daw ang handwash!
Big ring👎🏼👎🏼👎🏼👎🏼
THIS IS A FAKE TEST CSN YOU IMAGINE THIS GUY COULD SUE THE HELL OUTTA THE CHANNEL AND THE LAB