How do vaccines work? - Kelwalin Dhanasarnsombut

Learn the science behind how vaccines trigger an immune response and teach our bodies to recognize dangerous pathogens.
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The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does this seemingly counterintuitive process work? Kelwalin Dhanasarnsombut details the science behind vaccines.
Lesson by Kelwalin Dhanasarnsombut, animation by Cinematic.
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View full lesson: ed.ted.com/lessons/how-do-vacc...

[@Stickycomix]

That eight-year-old boy must've been so scared.

[@emangelx2393]

Elijahlux yeah he could of died from that if the vaccine didnt work

[@definitelynotafurry2503]

Actually I don't think you can die from cowpox, only smallpox (cowpox is a less severe version of smallpox)

[@quarkyquasar893]

+Rachel the gosh-darn human Edward Jenner infected him with cowpox and *then* with smallpox just to see if the vaccine works. :/

[@definitelynotafurry2503]

Oh.

[@karenelizabeth3094]

Elijahlux The reason he chose a child was probably because the child didn't really know what was going on. He likely wasn't told what he was getting infected with.

[@Marcin-ic3zz]

I will NEVER vaccinate my child. Some doctor will do it for me

[@lek2269]

They had us in the first half not gonna lie.

[@daveyboi3684]

@@lek2269 I was gonna do that darn

[@ssncrockett]

me (before clicking read more ): OH GOD NO me (after clicking read more): OK GOOD

[@tonyvu3235]

Lol this is honestly genius

[@rileysherrifftv6875]

2018 in a nutshell

[@courtneylafleur4273]

As a nursing student I think this is a great explanation of the use of vaccines. The one thing I would change is the blood dripping from the arms after injection. This does not happen post vaccination (maybe a tiny drop does) but for those afraid to vaccinate it may be one more reason not to. I would have used this video as a referenced piece of educational material for a health fair but the blood may cause more fear, especially for younger individuals.

[@swatboy763]

Tell me, do the boosters hurt because last time I was injected was with a local anaesthetic in the foot and it was 'the most painful experience of my life' Of 15 years. And if your making stuff up il will pull the trigger. *points gun*

[@nickgames1892]

Had vaccine last weak whas more afraid/nervous of the needle and pain than blood. (I mean its so small didnt hurt and yeah like 3 drops of blood on the bandaid. But didnt think about blood more about the pain)

[@Phantom3pilot]

great post. Davis's drug guide> Classifications > Vaccines/Immunizing Agents > Precautions > Severe Bleeding Problems (IM injections) probably rare, but worth mentioning.

[@durdleduc8520]

I’ve taken vaccines regularly and that visual unsettled me.

[@narsreenjohnson4966]

they have blood on their hands.so many children dieing and they call it simply sids

[@shrirangdeshmukh7481]

Well, This aged like a fine wine

[@GabrielWarlock]

All we need now is a TED-Ed video on the various types of vaccine. Like, a dedicated one considered the new mRNA vaccines expanded the batch

[@mickeycraven1822]

@@GabrielWarlock got that, just watched it.”How the COVID-19 vaccine works”

[@GabrielWarlock]

@@mickeycraven1822 Lolz! Our wish has been granted! Although I was thinking of something covering every kind of vaccine. But the new mRNA covid-19 vaccines deserve their own episode: they're nothing short of space age. So glad I got one of those!

[@pinktacokillah5287]

That would imply it aged well

[@diana-gw7xf]

💀💀💀💀

[@dlyonthescreen2657]

Kid : Doesn’t get vaccinated Disease : *it’s free real estate*

[@jostanvallis3564]

Child of an Anti-Vaxxer: when I grow up- Disease we have a Vaccine for: now let me stop your right there

[@koisj8310]

Jostan Vallis anti vax child: i cant wait to grow up- virus: we dont do that here

[@koisj8310]

ryan revolt if ud rather him die than ur no better than a murderer

[@benanderson6002]

@ryan revolt did you come here just to share false information?

[@joee7809]

ryan revolt go ahead what ingredients are in vaccines

[@yuvrajsinghjamwal7474]

I'm very surprised that there are so little comments about Covid here

[@jimschlosser1621]

Change from top to newest...

[@Kingofbacons3644]

i commented about covid

[@StiekemeHenk]

Please don't mention it, it attracts the horde! Also, I doubt most people who "criticize" around covid and vaccines actually do the research.

[@AD-wg8ik]

Covid vaccine isn’t a normal vaccine

[@Daytruin]

that is because big media is telling you everything you need to know....

[@Idleshot]

It's amazing it's usually one person who scientifically creates something that outlasts them and it becomes part of history for all time. We are lucky to have individuals who focus on finding a solution to very specific problems that saves millions of lives, yesterday, today and tomorrow.

[@therealeikichionizuka]

Exactly

[@user-xr5kp6qz8g]

Man the guy who invented the first vaccine was so ahead of his time. Truly genius

[@perfumeslipgloss]

no

[@GabrielRojasAhumada]

He took the idea from somewhere else, he created vaccines but the concept of exposing someone to make them resistant to certain diseases has been around for hundreds of years before jenner

[@cooper3795]

Can't find any anti vaxxers in the comments only comments talking about how many anti vaxxer commemts they found...

[@sofistar-yt5dh]

Jeff from New York proud owner of a 4670K Put most recent first

[@TheNaturalhumandiet]

Dont vaccinate.

[@littleorange9558]

@@TheNaturalhumandiet i like how you're commenting "dont vaccinate" everytime

[@TheNaturalhumandiet]

@@littleorange9558 Thank you. I'm glad you like it.

[@littleorange9558]

Meh

[@coconut6622]

Side effects: reaching adulthood, not dying , chance of not getting sick

[@donny234]

chance of ?

[@coconut6622]

jim jim Jim Jim Jim jam jam jam

[@saulmoment4008]

@@donny234 it's natural to be sick either you are vaccinated or not, it's just that vaccinated people don't die from preventable disease unlike the unvacinnated ones

[@batuhanozerr1736]

@@donny234 %100 percent

[@spacey2645]

underrated comment

[@MintPro47]

I won't feed my child because he might choke

[@JenaPug]

I won’t feed myself because he might get autism

[@sewzrie]

i dont know how to interpret this comment lol

[@FindingSerreniti]

@@sewzrie it’s how anti vaccine parents probably are

[@manthespoon]

@@FindingSerreniti lol but really, smh to them

[@alexwalkerpn1fdn834]

That’s an extreme statement. At a high level Exposing yourself to any virus has the same affect as a getting a vaccine. The underlying factor in how your immune system responds to the exposure is a direct correlation to your overall metabolic health. What’s the biggest difference? You don’t know what is in a vaccine and how your body will respond. However, you have control over your lifestyle and the impact it has on your health. You can’t put people in masks for a year and expect their immune systems to remain strong.

[@salicyl3350]

You left out passive vaccines, Passive Vaccines are Vaccines that contain an already produced antibody against a certain antigen, therefore they are not as good over time and need to get refreshed often but are excellent for patients with weakened immune systems like babies, old people, AIDS patients etc.

[@BlackApricot]

I thought those are called serum

[@Nicole-hi4zt]

I wrote this on an assignment and no one else in my class had written that type of vaccine so my teacher was super impressed 🤠🤠😂

[@rxiko5963]

This needs to be pinned

[@MayBlake_Channel]

Aren't those called "immunoglobulin"?

[@aaa-vx8ke]

Maylene Blake: Seeking Truth that’s an ingredient

[@lemone6945]

Kid that is in the pool: “Marko!” The unvaccinated kid: “Polio!” >:)

[@pat232000]

*clicked on this video to see protesting anti-vaxxers* *was not disappointed*

[@aaronmorton5427]

+KimiTheKitty amen to that

[@billyaepicgamer8642]

+KimiTheKitty It's fun to poke at them sometimes and see what their response might be. Have an upvote.

[@ExatedWarrior]

+Billy Aungpe "upvote" Redditor

[@billyaepicgamer8642]

Aaron Reamer You say that like there is something wrong with Reddit.

[@ExatedWarrior]

Billy Aungpe Nah just messing with you

[@kenrickmendonsa219]

Who else is watching this during the Covid-19 pandemic?

[@MrGean83]

I aint taking the covid vaccine. Off to a unknown location.

[@beartechdeck]

Me

[@valiili]

MEEEE

[@jackonamac8029]

Vaccinated person: is hit by truck Anti vaxxers: coincidence? I THINK NOT!

[@redphoenix1276]

there was actually a post where some girl who got vaccinated got hit by a car while on her bike and the mom blamed it on the vaccines she recently got

[@redphoenix1276]

@StickFigureBlue yeah she blamed the "heavy metals" in the vaccine 😂😭

[@letmetakeajormungandrattha8591]

@@redphoenix1276 Damn, I can't- I hope the child is okay, though.

[@idontknow4160]

OMG

[@jimboonie9885]

@@redphoenix1276 Pls no

[@emilyfauser6738]

Vaccines can be controversial for many reasons, and this video talking about how they actually work brings up an idea that is not talked about as often. Because of how vaccines work, people sometimes view them as counterintuitive. Because vaccines work by injecting a person with a small amount of the disease, or diseases, they are being protected against, people question how it works. When people are injected with the vaccine, it is common to experience side effects such as coughing, sneezing, inflammation, and fever. These symptoms, which are most commonly associated with becoming sick, sometimes make people feel like the vaccine is doing the opposite of what it is supposed to be doing. They go in trying to protect their kid from getting sick, so they often wonder why their kid starts to show signs of developing a cold or flu. These symptoms can easily be explained by what they are doing. They are working to trap things like bacteria and get rid of them from the body. After that, adaptive immunity kicks in and programs the body to get rid of these types of bacteria if they are introduced to the body in the future. Though the process and symptoms may seem harmful to parents, they are actually helping the child. When children are vaccinated against diseases, they have the opportunity to live a healthier life.

[@shanestark7145]

Yep

[@neoflare1815]

source and he explains that

[@MinttMeringue]

Louise Larsson Well let's hit your two points then, huh? 1) On the poisons and such. Which specifically? For example, if you worried about mercury being in your vaccine, let's explain why it used to be in there. While some forms of Mercury are VERY toxic (like those fish contaminated with it that you can't catch and then eat) other kinds don't harm the human body in small doses. The kind that used to be in vaccines was that safe kind, obviously. (Feel free to look this up yourself as well if you'd like the actual names of those specific compounds). 2) Lowering IQ and making people sick. Well, for one, IQ changes over your life anyway, due to age and other variables. But in relation to vaccines, there is no proof that vaccines would cause one's IQ to lower. One case you might be thinking of is vaccines causing autism perhaps? That isn't vaccines actually. The reason this is a popular thought is because a scientist once published a study in a well-known high-quality science journal that claimed this and demanded more research. In reality, his study was the problem. He only studied 12 patients and didn't look at all of the variables. Many scientists showed this and retracted the paper from the journal, but it was too late. The public already believed the lie. (I also believe the original scientist later retracted his own statements but I could be wrong on that). As for nowadays when people claim their child got autism after vaccines, that is only an anecdote, not data. You think parents are going to account for every variable? Or that the kid will instantly show they have autism as soon as they're born? So there's no need to worry, every good scientific study on vaccines hasn't found anything problematic. As for getting sick afterwards, same story, although in some cases people can get light flu symptoms and such for a day or two as their immune system learns what to do.

[@ajb4366]

Why is it the effectiveness of the flu vaccine last year was 10%. Why does the US and Canada have more sick people, physical and mental, than ever. If you take the vaccines than are not you protected from diseases. A ruling recently concluded a young girl health was damaged by a vaccine. A senior former cdc person exposed they were hiding the real data about vaccines.

[@ajb4366]

DM584 Canada and Australia, New England journal of medicine. www.nejm.org/doi/full/10.1056/NEJMp1714916?query=featured_home

[@elsenor2906]

Got my COVID 19 shot yesterday just wanted to learn how vaccines work🙂

[@StiekemeHenk]

Nice, got 6 family members, a few got their second. You'll be fine after a lil illness max and a sore arm. Thank you for actually looking up how they work, some ppl get crazy🙏

[@fed5179]

Have fun exposing yourself to certain evolved version of the virus, now that your body has spent all of its energy fighting against it, let's see how you'll handle separate evolved one

[@river7591]

@@fed5179 Did you get an ad in the beggining and decided not to watch it?

[@river7591]

@@StiekemeHenk Yep, three of my family members got it, they just had a sore arms and overall tiredness

[@StiekemeHenk]

@@river7591 oh man, I got the biggest headache and soreness for 2 days but had to work on the 1st 💀 lil bit of nausea and my cold found my immune system busy with other things, great fun

[@just_michael402]

4:19 Me in the background: “And also COVID-19!”

[@leodahvee]

Vaccines do cause severe side-effects, the thing is, THAT IS VERY VERY RARE, so it is worth taking the risk. Imagine you have to undergo a medical procedure to remove a tumor from your body, YES THERE ARE RISKS INVOLVED, but people usually take the risk! The thing with vaccines is, the risk is extremely low.

[@leodahvee]

@C L Yup! risks are insanely low! Can't wait to take the vaccine. Congrats to ur wife! I wish y'all well!

[@eliaskivenmaa4609]

Also, the severe side effect is way more likely if you get the actual disease

[@JohnDoe-ph7pz]

you seem to have a rare and severe case of common sense

[@kushal1206]

Hahaha....the athletes are collapsing....and you f ukers cant even see that....go put your head in deep shi

[@user-py3kd6pw7y]

Also, if I'm not mistaken, these side effects won't kill you most of the time.

[@j6de]

Anti-Vaxx kid: Measles: Im about to end this mans whole career

[@bailoutrishi6798]

Not much of a career to end though

[@Soapduck_]

Anti-vaxer: God will stop it. Me: He will, *If you vaccinate*

[@donny234]

stop it ? ahh the breathing yes

[@davidjackowski4336]

It's the modern Drowning Man storey.

[@saulmoment4008]

God: Bless human with great technology which results in modern medicine getting created such as vaccines to stop preventable diseases. Antivaxxers: God himself will stop it! God: Noah, Get the damn boat

[@parkye-na6095]

God only helps those that can help themselves #Christianity

[@iyoyoyoyoyoyoyo]

Exactly!!!

[@poppy-yt7td]

Antivaxx mom: I will not vaccinate my child Tetanus, Polio, Hepatitis A&B and other preventable diseases: *bust down thotiana, bust down*

[@Symonereid22]

chai hahahaha yess!!

[@letmetakeajormungandrattha8591]

This gave me an image in my head that I didn't want.

[@blankblank5409]

Let me take a Jörmungandr at that 👉👌

[@ccrptk]

I’m so glad I got vaccination yesterday..

[@Brucehumphrey]

Thank you!

[@randomsht9836]

Killua?

[@donny234]

it must not have been a vaccine for grammar

[@marcy1949]

@@donny234 It's good for me, what is the error in his grammar? Also, you don't capitalize your sentences.

[@blankblank5409]

jim jim Found the anti vaccer

[@niccatipay]

Ted - ed i applaud you for your way of sharing your knowledge!

[@DrPonner]

On the topic of themerisol, it is no more mercury than water is hydrogen. The chemical formula for themerisol is C9H9HgNaO2S. It is a compound molecule that contains Mercury in its build-up. Anyone who knows anything about chemistry (which it seems most anti-vaccine proponent do not) understand that a compound containing an element generally has vastly different chemical properties than its individual elements. For example, Hydrogen being a flammable gas and oxygen being a relatively inert liquid.

[@gigabic7487]

Thank you. Someone has to talk sense into those idiots.

[@TheCherry1994]

+Gigabic But those idiots are probably too dumb to understand the explanation ...

[@MeitongZhuKaldur]

+Arash-Hijunu Ihamek Thank you for clarifying that, all the people who complain about the mercury in vaccines needs to know this.

[@phi9249]

+Arash-Hijun Ihmeki What you say is true. But perhaps not the whole truth. A question remains on how the body re-alters this molecule so excretion through the kidneys is possible. As far as I know there is no mechanism in our bodies to remove heavy metals like lead and mercury. Is there some literature that you have read that suggests otherwise?

[@DrPonner]

Phi Sailor Just googling gives me lots of sites about the excretion of ethyl mercury (which is what thiomersal) is.

[@ricefieldworker7745]

Normal people: You should vaccinate your child! Karens: *No, i don’t think i will* Kid: *Dies* Karens: *Impossible*

[@danieldavid8734]

kzbin.info/www/bejne/gmGToIOGnbuYoKs

[@ricefieldworker7745]

daniel david i feel bad for you for actually believing in conspiracy theories

[@lordpredator8855]

@@ricefieldworker7745 conspiracytard he is.

[@habaulch]

You know vaccines can do the opposite of helping?

[@ricefieldworker7745]

@@habaulch yare yare. I understand if someone’s like allergic or it’s just a rare side effect but just because someone gets a rare side effect doesn’t mean that everyone gets it. I wouldn’t be surprised if you think that you can get cancer by eating food that is too warm.

[@Tursiopstruncatus]

Children's vaccines should be mandatory, just like safety seats in cars are mandatory.

[@camilaecho8300]

Yes, exactly. Anti-vaxxers wouldn't even exist if it weren't for a satire news article

[@douglaspantz]

Which is why there's going to be a anti-seatbelt movement eventually.

[@vaninagomez6437]

In Arg they ARE mandatory. And the antivaxxer movement is slowly growing here anyway. It's crazy. Does every generation need a terrible reminder of the importance of vaccines? Please!

[@snulv3971]

Vanina Gómez Well the problem is that there’s no law to it you won’t get arrested or get a ticket

[@MinttMeringue]

Exactly! Obviously we can't give it to some people (certain auto immune diseases and all that jazz) but the whole reason vaccines work so well now is because of herd immunity!

[@kingsteve4304]

The comments on this video are so soccer mom on Facebook who post nothing but bible quotes with minions plastered on them, and beg people to give them more moves on candy crush.

[@adamquirke6024]

I haven't seen a bible quote yet

[@Tonytestcase]

The amount of echoes from equally questionable sources pretty well makes up for that.

[@matea2156]

Bruhhhhhhhhh

[@sandramorcos9090]

Your comment is so offensive! what does science have to do with God? haven't you ever find a Christian doctor?! There is no correlation between believing in God and being against science and knowledge.

[@Star-nl5id]

Sandra Morcos science and Christianity can kinda conflict each other

[@Raage.]

*Anti vaxxers have entered the chat* And..... *THEY LEFT.*

[@brycelahm1283]

ChaosLord AE They have died of measles

[@xyla3824]

DAMN

[@The2014engineer]

Now I know it's an animated example, BUT at 0:29 when the little boy felt super relieved he was cured from the disease and they both were thrilled... that hit me where it hurt! 😭

[@russelllee5594]

This animation of an injection is what creates peoples fear of needles

[@NoriMori1992]

I remember reading a health book for kids that used visual metaphors to explain how bodily systems work. They were pretty good, too. To explain vaccines, they represented the immune system as soldiers protecting the body, pathogens as invading soldiers, and vaccines as weakened enemy soldiers sent in to let the defending soldiers train in how to fight them. I've always been fascinated by how literal this metaphor actually is.

[@doublethreat5827]

Comment section: 70% People talking about anti-vaxxers 5% People talking about People talking about anti-vaxxers 3% Anti-vaxxers 22% Everything else

[@drygrahamcracker7804]

No the 70% is overused antivaxxer jokes like "anti vaxxers never get old, just like their children"

[@PBAmygdala2021]

Whats your margin of error?

[@Smile-vl9sz]

the math is correct, but are the ratios correct? (it would be sus if they were...)

[@CannedSoup602]

4:15 Doctors - eventually could treat HIV, Ebola and Malaria CRISPR - Allow me to introduce myself

[@D1G1TAL420]

Antivaxxers: NOPE

[@theparadigm8149]

Hotel: Trivago

[@awhb5412]

Thank God I found this, i needed briefly explained easy to understand lesson about vaccines

[@lalitaplays6594]

Guess who's getting immunisations in 9hours? Yeah, me

[@mitchlee2137]

Lalita Plays I just got one lol

[@purplerose5316]

@Adriel Ramos poisons are working

[@thomashorne2607]

@@purplerose5316 clearly your brain isn't

[@jhin8299]

@@thomashorne2607 Wait he has a brain?

[@GreenTech8DSOUNDS]

Jhin no

[@peggychai2714]

Amazing video with a nice and clear explanation! Thank you TED-Ed!

[@somiyasomiya3283]

I really really really appreciate your work. You have to know that you are unique and you should be proud of your work.also lucky to have good team work together to accomplish this great thing you do

[@hi-im-lugh9570]

I got an anti-vaccine commercial before this .-.

[@tjallingappelhof2055]

Hah

[@astr3a107]

How ironic!

[@miriamluthi1306]

ha

[@firebow2810]

They shouldn't even be making those, they are putting many people in danger...

[@purplerose5316]

@@firebow2810 maybe you can leave your blind Vaccine religion for a little bit and try to learn something?

[@oceanti6791]

I try to explain it to anti vaxxers and they just say “I don’t believe that” it’s like playing chess with pigeons.

[@Alex-ud7ol]

Oceanti so true lol

[@catandcomparator]

that is a horrible insult... to the pigeons.

[@jashanestone]

They're doltish followers who don't do the research and voids themselves 🧠 into "rabbit holes"..

[@surfinmuso37]

Gee it's funny then how the human species survived and thrived for millions of years before vaccines were even invented. Due to a little thing called the immune system. Responsible for natural immunity/herd immunity. Oh ...oops!

[@xyla3824]

@@surfinmuso37 bro stop spamming just cuz you dont agree mkay This is a very trusted channel btw

[@Le_eahh]

Ok I’m thankful for this video, I was scared to get the covid vaccine because of the rumors but I get it now

[@therealeikichionizuka]

Glad you got vaccinated. Listen to the people in charge than some random internet people. They usually don't understand anything, and Ted Ed always knows what they're talking about. (This reply isn't sarcasm.)

[@cefu8492]

@@therealeikichionizuka tbh its understandable, due to the missinformation regarding the vaccine, the poor management on making studies on it, and the documentary "plandemic" people began to be skeptical on the vaccine, specially since you have to take a couple of them just to fight 1 disease, and also due to the fact that the media didnt discuss the possibility of it Leaking from a LAB that studied types of corona viruses in Wu Han and just focused in the market theory, but sometimes i feel they are too supersticious on it, at least people know the vaccine isnt made nor is it supposed to harm them but the disease

[@therealeikichionizuka]

@@cefu8492 definitely. I just say listen to your government. Even if they do s***y things, at the end of the day, they’re still here to protect you. I really don’t like to get vaccines, but they help you, you need to take them, and they’ve saved more lives than any of us can imagine. I honestly just think people wanna be rebels, but it would probably be better for them to TP a house if they wanna be “cool lawbreakers.”

[@xyla3824]

I've learnt to trust the government in regards of health, they might say weird things sometimes but it's clear they dont want their country to die :)

[@capybaraandwatermelonenjoy8208]

@@xyla3824 as bad as the gomerment can be sometimes, no government wants all of it's people to die off. then they wouldn't have power.

[@Psychopatz]

I love how exaggerated the puncturing of the needle being animated. 😂

[@jayprakashkakde7767]

This video was released 6 years before pandemic and still it is useful 😀

[@forzaf1gtaracingandmore824]

Anti-vaxxer: exists for a short time Grim reaper now has to work overtime.

[@damianmontoya6414]

Anti-vaxxer: exists Death: STOP FORCING ME TO WORK OVERTIME

[@gothnerd887]

Poor guy

[@D1G1TAL420]

Nice rhyme bruh

[@bailoutrishi6798]

Got polio? Here's a little herbal recipe. Death: *NOPE!* That's not the meaning of "remedy".

[@JohnDoe-ph7pz]

poor grim

[@tonizeng7836]

OMG, i felt so bad when the old person died.

[@downbey915]

Ha if you only knew how effective vaccines really are. The mom kissing her son made me want to cry. she can kiss her son again

[@sofistar-yt5dh]

downbey 258 Because people of that time period thought vaccines turn you into a cow

[@danieldavid8734]

SADLY PEOPLE IS STILL ASLEEP. kzbin.info/www/bejne/gmGToIOGnbuYoKs

[@Tearnalte]

@@danieldavid8734 yes, like you

[@user-rq4ey7hl4h]

person: makes video abt science science teachers: it’s free real estate

[@Rigiroony]

I got my flu vaccin and started feeling sick and wanted to know why. This is really cool.

[@Epsy1090]

Flu vaccines don't always work like other vaccines, I can't remember the reason tho sorry.

[@mrhaci7747]

@@Epsy1090 viruses causes flu and viruses always change their DNA so you must vaccine every year for flu

[@arandomperson5434]

If you had a vaccine and you get mild fever or headache or inflammation. That's a sign that the vaccine works

[@brostrod]

Might be mild side effects, nothing bad

[@beerten202]

That means the vaccine you took has a weakend version of the substance If your having a fever that means the immune system is busy taking care of it So nothing big is happening

[@kyled1540]

We can never be so thankful for this people who come up with this Vaccines

[@dinonuggiesguy4847]

Karen:yeah let's put essential oil on our dying son

[@jnrbelfast]

Here after the covid-19 outbreak. Let’s hope they get a vaccine quickly. Good luck everyone.

[@PujaDevi-nr8qk]

I genuinely love this channel ❤️ Very informative

[@maieshazarin4197]

This was very informative, especially during this time! Thanks :)

[@halfbloodprince1638]

One of the difficult topics to cover in a 5 min video....great job teded👏👏👏

[@adolliadolo5450]

Thanks for sharing your knowledge with us TED-Ed

[@beachturkey7643]

god sent us science

[@vanyagangwar399]

Thanx for educating

[@brandon.hendrickson]

An excellent explanation, naturally! I THINK there may be a misleading animation at 3:20 - when a vaccine is given, the video shows bumps going down. As I understand it, that’s what (e.g.) an antiviral does - a vaccine teaches the immune system what viruses to look out for in the future. (But I’m just a kids science teacher.)

[@theknowall2232]

View these channels: 1. The Truth About Vaccines 2. UK Column 3. Computing Forever

[@ettinakitten5047]

Some vaccines are given to someone already infected with a disease in order to speed up the development of adaptive immunity.

[@ThatClinicalInstructor]

My nursing and allied health students, who are learning about vaccines via distance learning in my online virtual classroom, are very grateful for this fantastic video. Well done, TedEd! Also.... VACCINATE YOUR KIDS, PEOPLE! Nurse TCI says so.

[@justinfilipovic8939]

I can show you information that would make you question vaccines

[@aadityamangalam394]

justin filipovic Ok then do it

[@jaydeejohnson7]

@@justinfilipovic8939 what you got?

[@justinfilipovic8939]

@@jaydeejohnson7 sorry been busy I'll get to it soon

[@justinfilipovic8939]

@@aadityamangalam394 I'll get to it soon

[@malachitegreen2413]

Edward Jenner : injected vaccines Kylie Jenner : injected fillers

[@RadityaNugraheni2405]

Due to the coronavirus pandemic, I feel the need to look back at this video again. 😂 Awesome as ever. Thanks TED-ED

[@dallinnguyen8025]

our body is so smart

[@priya56]

Nicely explained. Thanks a lot. 👍

[@renzoray18]

Well, what do you know, after 6 years this would be really helpful in understanding the vaccine.

[@atlas2296]

Its a different type of vaccine, mRNA vaccines use mRNA as a blueprint for a protein that fights Covid. It enters cells, goes to the ribosomes inside your cells, and instructs ribosomes to make those specific proteins, then is destroyed by the cell

[@bigoof8559]

@@atlas2296 It’s still in trial till 2023

[@atlas2296]

@@bigoof8559 Which means what exactly?

[@jacobmatton7588]

2021: When people say the COVID-19 vaccine was rushed. But this video was made in 2015 stating that the techniques used in the COVID vaccines have been in practice/research/development for many years. That helped for quicker response to a vaccine.

[@StiekemeHenk]

But BILL GATES AND A LEVEL 4 LAB IN CHINA

[@bigmac69iiu71]

@@StiekemeHenk pls be satire comedy

[@TheOneShotWunda]

Then why do we need to take 2 and potentially even more doses of the “vaccine”? If they’re mRNA vaccines shouldn’t the body be able to respond to it after the first dose and recognize it at its most basic level?

[@StiekemeHenk]

@@TheOneShotWunda you should watch kurzgezagt's video on the immune systen, about 5 minutes in should be a bit more useful. Basically, your system needs to learn about it so a single shot might not be enough for any useful, long term protection. So with the tests and research the companies decided 2 should be enough and only Jansen / Johnson and Johnson in the USA had one that's good after one.

[@bigoof8559]

The mRNA drug is still in trial till 2023

[@JuliaVilla]

its amazing to learn with this video! thanks for sharind this kind of knowing!

[@FlSHlE]

BE STRONG MY OLD MAN

[@snekksuperior]

That grandpa is Iron-Man on steroids.

[@doomedpepper8109]

I searched "How do vaccines work?" with the expectation that Ted-Ed would have made an aesthetically pleasing yet educational video about the workings of vaccines in the human body. I was not disappointed.

[@Tearnalte]

had us in the first half not gonna lie

[@xyla3824]

Ted ed probably created my love for science lol

[@babu8487]

Thank you for sharing

[@shinysana1958]

teded...you are freakin' amazing!

[@RidgyHeart]

The body is so interesting to learn

[@maher6787]

great video

[@benjaminnebenjamin6033]

And here i am learning about this in quarantine season

[@gamersx9404]

thanks for making this video

[@Sriharshabhogi]

I love Ted-Ed.

[@traderlaksh9482]

Everyone needs to know this ✅

[@user-dk6rx2qm7j]

OMG I need to do a essay about vaccine at high school this helps so much

[@interviewkityari6804]

Thank you for wonderful knowledge.

[@s2c1mw7mP5l]

This is how many people are waiting for a coronavirus vaccine I l I V

[@ileiad]

damn. only a few people actually care about the vaccine.

[@s2c1mw7mP5l]

@@ileiad sadly :'(

[@xeno2273]

Anyone here to find anti vaxx comments?

[@elliotville7820]

They're hiding in the reply section

[@boxyk9]

me

[@carteradams43]

"Aries Leo Leo" is the main one i found

[@bailoutrishi6798]

@@elliotville7820 lmao trueee 🤣

[@retaj6840]

Carter Adams yep

[@swf4841]

Animation is a fantastic tool for clarity.

[@quinnreverance611]

the human body is so complex and amazing with all its defence systems.

[@ah9259]

A lot of videos are debunking antivaxxers. And yes, that is necessary, but I like how Ted Ed chose to take a different approach to the issue and explain how it works.

[@always-alicia]

This aged very well! So happy to see that advances in DNA vaccines (or more specifically, mRNA vaccines) have helped us at least tame COVID

[@trikegang6671]

This didn't age as well. although we have made huge improvements there is always that one group, and in this case it's a very big one(the Facebook moms) that claim that there are micro bots in them so that the government can control us.

[@lw1zfog]

hahahahaha, good lord.

[@sheulykhatun3606]

@@trikegang6671 Triceratops horridus being based as usual

[@trikegang6671]

@@sheulykhatun3606 am u wrong though?

[@trikegang6671]

@@sheulykhatun3606 people that have no idea on the matter don't listen to the experts that have decades of experience on the subject.

[@maddoxmonteza]

wow this is truly amazing

[@emanuelvazquez6492]

I have to do a presentation about this in like 2 minutes so this helped

[@theogarcez1999]

Hope you nailed it

[@emanuelvazquez6492]

@@theogarcez1999 The teach didnt want to grade anymore presentation so he gave everyone an A 😂😂😂

[@arandomperson5434]

Nice Profile pic.

[@justicejordan1636]

6 years later(through consistent research and technology advancement) COVID-19 vaccine was developed in just 11 months. But of course with the help of all the countries around the world who funded the vaccine research.

[@ettinakitten5047]

Plus, they already had vaccines against related diseases like SARS, which helps.

[@michaeljordan5630]

Its better than surgery. You all know that right. And some people refuse to get surgery.

[@gothnerd887]

I heard Jehovah's Witnesses refuse blood transfusions

[@Bas_tet]

@@gothnerd887 True

[@_LoadedShotgun_]

love the animations

[@navycalvin9337]

Man, this Animation is cute yet awesome

[@Dogyphil]

I'm gonna get every vaccine and become immortal

[@imperialdoggo5826]

It doesn’t work like that. You die because your body breaks down

[@WANDAH0II]

IT'S BIG BRAIN TIME

[@liviomoreira2457]

As soon as you got em all, you will be the Pokémon master

[@NewZeroGames]

Amazing video!

[@hsaqib8995]

Thank you for sharing :)

[@biswajitghorai2155]

One of the best knowledge learning platform👍👍👍👍

[@aumacharya3869]

if any body wants to know more about the immune system then watch the kurzgesagt video on the immune system

[@jancelada2426]

Thanks!

[@rajatbaldawa1952]

Jan Celada u

[@daniilkapustin5062]

The video could be much more cinematic and enjoyable if the author included the sound effects for little things such as colliding balls(1:58) or the sound of injection (0:26). Despite that, the video is really interesting and worth watching!

[@abhinandandachawar3308]

Thanks for the work for us 😘😘😘😍♥️♥️♥️