The Side Effects of Vaccines - How High is the Risk?

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  • Published: 12 May 2019
  • Sources: sites.google.com/view/sources-vaccines

    Vaccines are one of our best tools to prevent dangerous diseases, but they come with side effects. So would it be safer not to vaccinate?

    This video has been supported by a grant from the Bill & Melinda Gates Foundation.

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Comments • 65 581

  • Kurzgesagt – In a Nutshell

    Dive into sources and further reading here: https://sites.google.com/view/sources-vaccines


    Vaccines and their side effects are a hard topic to cover – we know we keep saying this, but this case especially, there were a lot of things to consider. You can’t blame people for being worried, so we wanted to take their concerns seriously.


    Because it is impossible to cover everything there is to know about vaccines in a ten minute video our sources are extra extensive and explain a lot of aspects in more detail, with an extra focus on further reading.


    So if you want to dive in deeper or have more arguments at hand for your next heated discussion, here you go.

    • frick ajit pai
      frick ajit pai  22 hours back

      Kurzgesagt – In a Nutshell epic

    • joel marin
      joel marin  22 hours back

      thank you for making this video, its been a great help for my social justice project. I hope to use this as a source to help write my letter to a politician, (who is undecided as of writing this), I really hope to make a change and to make vaccinations more mandatory in the united states!

    • Jarley
      Jarley  1 weeks back

      Kurzgesagt – In a Nutshell you forgot one thing that vaccines cause:




      adult hood
      I don’t want that happening to my children

    • GodmanBG
      GodmanBG  1 weeks back

      It would be nice if you had touched upon, or at least mentioned that we vaccinate against a multitude of other diseases besides measles.

  • SkinnyTraver Not Your Buissness

    FINALLY Maybe this great video will stop thoes anti vax moms. Like thank you for this video.

    • Grim Reapers GSIII
      Grim Reapers GSIII  58 minutes back

      The reason we don’t have as many measles cases is because of the vaccines

      • Logan Hilburn
        Logan Hilburn  1 hours back

        Kurzgesagt...
        You guys are beautiful.

        • Sim Suil
          Sim Suil  1 hours back

          The video game and movie references are so good

          • ADLAZER EX
            ADLAZER EX  2 hours back

            Bet he got payed by a rich doctor not anti vaxx but it would make sense

            • SamSki
              SamSki  1 hours back

              ADLAZER EX what??

          • Carl
            Carl  2 hours back

            people who dislike this video make me want to cry - thank you for highlighting such an obvious and important problem to the people of the world - we (sane people) love you!

            • mighty kitty
              mighty kitty  2 hours back

              How does vaccines even cause autism?

              Simple, it doesn't. Like HOW!? HOW!?!?!?

              HOW WOULD THAT EVEN HAPPEN!?

              • Zexion
                Zexion  2 hours back

                These animations are so good

                • Zaoshi Kaba
                  Zaoshi Kaba  3 hours back

                  Aren't people born with autism? So even if vaccines do cause autism, it would be appear in children, not vaccinated people. Not to mention by that time vaccine is long gone meaning it was our overprotected body that caused the autism.

                  • Zaoshi Kaba
                    Zaoshi Kaba  3 hours back

                    1:51 launch the missiles!

                    • Sekai Ni Heiwa
                      Sekai Ni Heiwa  4 hours back

                      Since we are over populated we should say thanks to those who wants to die fast . What the issue here I don’t understand. You profixers are all protected . Let people scarified there life’s and reduce global warning . Why you suckers so desperate here ? Are you worry about those few immuno compromised child ? Who need natures mistakes anyway ? Spartans feed birds with nature’s mistakes . Let people die and save the world . Or you feel that you were fooled ? Or you understood that you have been damaged ? And now envy to those who are smarter , healthier ?

                      • Arrya Willems
                        Arrya Willems  4 hours back

                        I will be vaccinated tomorrow. At first I didn’t want to because of all the misinformation on the internet. But this video changed my mind.

                        Thx kurgezagt for educating people around the world!

                        • Steve Tate
                          Steve Tate  4 hours back

                          10:06 when you check your favorite Minecraft channel and all their videos are now fortnite

                          • Sekai Ni Heiwa
                            Sekai Ni Heiwa  4 hours back

                            Vaccines safes life’s - we are overruled. Vaccines reduce traffic,lower real estate prices , reduce global warming , creates additional jobs in mental institution sectoral, increases XXXXL diapers sale and Japanese anime makes billions . How can people say vaccines are bad . Crazy. But I’m Orthodox Jew so we are exempt from vaccination. So sad that we can’t join to benefit mankind .

                            • TATO SOme
                              TATO SOme  5 hours back

                              I’m a proud father of 4 anti vax kids.

                              Edit: I’m a proud father of 2 anti vax kids.
                              Edit: I’m a proud father of one child and i believe vaccinations help protect our kids

                              • Or3o Nightcore
                                Or3o Nightcore  6 hours back

                                shit i took my second vaccine shot today o.O

                                • Nicholas Leclerc
                                  Nicholas Leclerc  6 hours back

                                  1:22
                                  You should’ve honestly put a Super Sayian silhouette with a big red X sign on it; because you’re basically saying that Zenkai boosts don’t exist in humans without the immunity system

                                  • Hummus Sapien7.6Billion

                                    everyone who down voted is an anti-vaxxer

                                    • Darth Games
                                      Darth Games  7 hours back

                                      4:52
                                      Fun Fact (or just Fact idk): Earth #199999 is the number for the Earth on the MCU
                                      Since in Marvel,every Universe has it's own Earth and it's number

                                      • Freddy 2.o
                                        Freddy 2.o  7 hours back

                                        The people who disliked this video are either antivaxers or people who just saw the thumbnail

                                        • クラリス
                                          クラリス  8 hours back

                                          G T A

                                          • Gregor Coetzee
                                            Gregor Coetzee  8 hours back

                                            The War of Cells: Comming this Summer

                                            • Aqua 458
                                              Aqua 458  9 hours back

                                              Where my anti-vaxxers at!?





                                              Oh wait there in the grave

                                              • Finix
                                                Finix  9 hours back

                                                Vaccines are medicines, and as all medicines, there is a need to consider children by case. In Italy they do not do that. We have more than 10 mandatory vaccines, and some of them are done together (3 vaccines at the same time), and this is dangerous. Who does say so? The books of medicine! They say something but they do the opposite.

                                                • Vary Olla
                                                  Vary Olla  9 hours back

                                                  No = it's not.  From the very moment an infant is born = it is exposed to a myriad of microorganisms.  You have right now a host of bacteria, viruses, and fungi living inside you and which wage a continual war against yourself and each other. 

                                                  So not all vaccines are the same as some contain entire weakened pathogens - while others only contain pieces of a pathogen or else the toxin it produces.  A piece of something - let along a toxin - can not replicate and thus it is impossible to infect the individual with the condition.  Meanwhile the employment of attenuated pathogens is tolerated by almost everyone.  We can sometimes see - albeit very rarely - a few who owing to some idiopathic issue with their immune system they have trouble destroying the weakened virus. 

                                                  So a person who can not even tolerate exposure to a weakened virus = will in all likelihood react similarly - or worse - upon exposure to the full-strength "wild" version of the same.  If you want to critique vaccine employment you'd better look at the entire picture and get your facts straight first.  Have a nice day.

                                              • Gannicus
                                                Gannicus  9 hours back

                                                people are concerned that if vaccines were mandated by the government, that opens the precedent that your personal health care is no longer private, meaning that opens pandora's box for forced abortions, or something more realistic like micro-chipping citizens. The liability of the government for a bad batch of vaccines, or the fact the government could maliciously alter a vaccine after they are mandated is a privacy and health concern. Vaccines are good, but they shouldn't be mandated.

                                                • Bill Kerman
                                                  Bill Kerman  9 hours back

                                                  I got sick after my flu vaccine

                                                  • The Elite Pickle
                                                    The Elite Pickle  7 hours back

                                                    But not nearly as sick as you would have if you had gotten the flu

                                                • Válter Venâncio
                                                  Válter Venâncio  9 hours back

                                                  Now we need a video on Cholesterol, please!!

                                                  • Delkarix
                                                    Delkarix  10 hours back

                                                    Anti-vaccination is a problem that will literally solve itself.

                                                    • Sekai Ni Heiwa
                                                      Sekai Ni Heiwa  1 hours back

                                                      +MQF II But you are protected you diluted moron. So whats the point of vaccines if you afraid of disease to catch. Anybody home at your head?

                                                    • MQF II
                                                      MQF II  2 hours back

                                                      Sekai Ni Heiwa Problem Is, it’s probable that they'll take some people with them.

                                                      Like, to visit South America, you must have Yellow Fever vaccine. Imagine an Anti-Vaxx faking his passport and ending up causing an epidemic outbreak In his country when he comes back?

                                                    • Sekai Ni Heiwa
                                                      Sekai Ni Heiwa  4 hours back

                                                      Delkarix so be happy . Why the fuck you worry about those who’s gonna soon die ? Not enough people in this world ? What’s the matter with these pro vaxxers morons . Just be happy that some people sacrifice there life . You are protected so chill out and watch how anti vaxxers die like flies.

                                                  • HeyItsHarlys
                                                    HeyItsHarlys  10 hours back

                                                    I am an anti-vaxx mother of 2 and my kids will still never get vaccines

                                                    • HeyItsHarlys
                                                      HeyItsHarlys  3 hours back

                                                      +The Elite Pickle True. It's probably my fault cuz i dunno how to word it like it's a joke sometimes /shrug

                                                    • The Elite Pickle
                                                      The Elite Pickle  4 hours back

                                                      HeyItsHarlys well I’m not sure if people just naturally click on everyone’s profile but I for one do not however you have provided evidence as to why it was a joke and your right a mother probably wouldn’t play ark

                                                    • HeyItsHarlys
                                                      HeyItsHarlys  7 hours back

                                                      +The Elite Pickle Take a lookie at my channel and thoust will tell I'm not a womam or a mother

                                                    • The Elite Pickle
                                                      The Elite Pickle  7 hours back

                                                      HeyItsHarlys that wasn’t a joke. It wasn’t sarcastic in any way or obviously a joke.

                                                    • HeyItsHarlys
                                                      HeyItsHarlys  10 hours back

                                                      +NOB ODY_ i forgot i can't make jokes on yt comments rip

                                                      But that sounds about right

                                                  • Martial Kintu
                                                    Martial Kintu  12 hours back

                                                    Tell them about the aluminium, the mercury and etc.

                                                    • MQF II
                                                      MQF II  1 hours back

                                                      Your blood has literal explosives In its composition.

                                                      Even better. Sodium Chloride has a substance that burns and explode upon contact with water and Chlorine Is corrosive and toxic if inhaled or consumed.

                                                      Yet you put salt In your food A-Ok.

                                                    • Nadia Grzeszkiewicz-O'Neill
                                                      Nadia Grzeszkiewicz-O'Neill  3 hours back

                                                      +Martial KintuIt may be in small portions, but don't forget about the Formaldehyde, Tryptophan, Threonine, Isoleucine, Leucine, Lycine, Methionine, Cystine, Phenylalanine, Tyrosine, Valine, Argenine, Histidine, Alanine, Aspartic Acid, Glutamic Acid, Glycine, Proline, and Serine.






                                                      Oh, wait, sorry. Those chemicals are in apples, not vaccines. My bad.


                                                      My point here is that there are chemicals and ingredients in almost everything that would be dangerous in high dosages, but in small portions they are fine. As another example, bananas contain potassium, which is radioactive; however, it comes in such small portions in bananas that it has no effect on you.

                                                    • Martial Kintu
                                                      Martial Kintu  9 hours back

                                                      +eeeaten The mercury in the fish is all due to environmental destruction. Didn't really know about aluminium in orange juice but now thank know I should just stop buying it.

                                                    • eeeaten
                                                      eeeaten  11 hours back

                                                      Martial Kintu sure, tell us about the aluminium in orange juice and the mercury in fish.

                                                  • deity_games
                                                    deity_games  12 hours back

                                                    Just got my abi-thema, I have to discuss wether a mandatory vaccination is righteous or not. But more in a philosophical way, because its a philosophy presentation^^

                                                    • Ravi Jyot
                                                      Ravi Jyot  13 hours back

                                                      I have never been vaccinated is it to let for me or is everything normal.

                                                      • Ravi Jyot
                                                        Ravi Jyot  7 hours back

                                                        +eeeaten not at all

                                                      • eeeaten
                                                        eeeaten  11 hours back

                                                        Ravi Jyot have you had measles?

                                                    • Arpit Solanki
                                                      Arpit Solanki  13 hours back

                                                      mom : I am not going to vaccinate my child you heathens.
                                                      measles and other diseases : It’s free real estate .

                                                      • Altay Badirov
                                                        Altay Badirov  14 hours back

                                                        What about the other vaccines? Not all the vaccines are the same.

                                                        • MQF II
                                                          MQF II  1 hours back

                                                          They all pass on security tests before being released to the public

                                                        • NOB ODY_
                                                          NOB ODY_  10 hours back

                                                          All of them.

                                                        • eeeaten
                                                          eeeaten  11 hours back

                                                          Altay Badirov they all cause way less harm than the diseases they prevent.

                                                      • Yonakuni
                                                        Yonakuni  15 hours back

                                                        lol Funny thing about these Anti-vaxxers is that they mostly DON'T exist in the eastern hemisphere. This issue is sooo unique to the western hemisphere.

                                                        We Asians don't question vaccines because to us, they keep our kids alive longer than those who didn't get the shots; more than enough to convince us. We'd rather save a million babies than let a million die.

                                                        Point being: this is a stupid argument from the west; to the point where we don't even talk about it here on the east because it is a given. We get our kids vaccinated, they live longer. End of discussion.

                                                        • Yonakuni
                                                          Yonakuni  13 hours back

                                                          +Fresh Pixelated Memes IKR? Think of all those kids at risk just because someone did research that vaccines cause AuTiSm so DON'T vaccinate your children.

                                                          Damn, if they are so smart (and if it does cause AuTiSm), why not just make a better vaccine than TELL DA WHOLE WORLD NOT TO VACCINATE THEIR CHILD.

                                                          lol sometimes, the simplest of questions cannot be answered by any genius.

                                                        • Fresh Pixelated Memes
                                                          Fresh Pixelated Memes  13 hours back

                                                          What really pisses me off is how there are people in developed nations that have access to this kind of medical technology and they're just dismissing it because of mere superstition.

                                                          I guess the saying "One man's trash is another man's treasure" really is applicable here.

                                                      • Crusader Carl
                                                        Crusader Carl  15 hours back

                                                        Anti vax 10 year challenge
                                                        *404 image not found*

                                                        • Stunder0319
                                                          Stunder0319  15 hours back

                                                          6:30 just a question,did it just inject that...into a...
                                                          ...
                                                          Butt?

                                                          • Depressed items for sale
                                                            Depressed items for sale  16 hours back

                                                            There's this one awful side effect of vaccination that kills you in about 70-80 years.

                                                            • Jasper Beekman
                                                              Jasper Beekman  16 hours back

                                                              That moment u realize this is basicly a real form of homeopathy

                                                              • dhuyd
                                                                dhuyd  16 hours back

                                                                The real disease is corporate interests & transparency. The Vaccine industry can be weaponized like a youtube algorithm. Who is the real demographic with your smartphones? The ad agencies. What's the product? Your data. Who is the fuel? The public. Now while different industries leverage different market pressure points, it's healthy to play devil's advocate.. or rather the relationship between content & context is key

                                                                • TheHoustonSkeptic
                                                                  TheHoustonSkeptic  1 hours back

                                                                  Playing devils advocate when you have no evidence to support it you are just being retarded

                                                              • xxhalogamer22xx
                                                                xxhalogamer22xx  18 hours back

                                                                This is Anti-Vaxxer logic:
                                                                I don't feed my children because eating can cause choking. Sure there are some good results of eating such as that so called "prevents starvation" nonsense. There are starving people everywhere in the world and they've survived. I have choked on food before and did some research and guess what? Thousands of people choked on food each year. What I'm saying is that the government has no right to tell me what to do with MY children. Food is deadly and I will stand by my reasonings!

                                                                • Fresh Pixelated Memes
                                                                  Fresh Pixelated Memes  17 hours back

                                                                  Too much water will cause you to drown so that's 100% dangerous, right?

                                                              • Jaye Potato
                                                                Jaye Potato  18 hours back

                                                                Hey anti-vaxxers, discuss the dangers of vaccines here!

                                                                • Jaye Potato
                                                                  Jaye Potato  17 hours back

                                                                  Just kidding, you trash people. Vaccines DO NOT cause autism. In fact, autism isn't bad. I have autism, and I know that nothing is wrong with it.

                                                                  2, You barely even SAW proof of vaccines being bad, so shut up and check someplace else on the web, where there's proof of pro-vaxxers (people like me) being true.

                                                                  And finally, 3. You don't know how vaccines can do bad things to you.
                                                                  Nobody wants to believe you, anti-vaxxers, but you say false truths and you try your best to get people to join you. YOU'RE NOT A GOOD PERSON. (And fellow Pro-vaxxers, if you're reading this, sorry for the aggressiveness.) Leave a like to save humanity from vaccines like measles. Thank you for reading this, and GET YOUR OPINIONS RIGHT.😬

                                                              • The Boat
                                                                The Boat  18 hours back

                                                                guess who just got owned while searching the internet for a cause of autisim?

                                                                *karen, but its obvious by now*

                                                                • ChicoCuantico
                                                                  ChicoCuantico  18 hours back

                                                                  Nadie ha muerto nunca como consecuencia de un medicamento.

                                                                  Fin del debate.

                                                                  • ErikLew
                                                                    ErikLew  18 hours back

                                                                    Inti vax moms be like...

                                                                    • demonitized
                                                                      demonitized  19 hours back

                                                                      Anti vaxxer: vaxines cause autism

                                                                      Anti vax child: if only I would have lived long enough to find out

                                                                      • Zoltán Halassy
                                                                        Zoltán Halassy  19 hours back

                                                                        1:18 "Contrary to popular wisdom, what doesn't kill you doesn't make you stronger."
                                                                        1:28 "our immune system came up with an ingenious way to get stronger and stronger over time."
                                                                        1:38 "our immune system automatically creates memory cells."
                                                                        1:59 "many infections you beat once will never make you sick again."


                                                                        The "what doesn't kill you makes you stronger" means exactly that. 1. experience, 2. remember, 3. act accordingly next time.

                                                                        • Darkira Knight
                                                                          Darkira Knight  16 hours back

                                                                          +Zoltán Halassy Yup, being able to survive doesn't mean you're stronger now, but you still have chance to be stronger, because you're not dead.

                                                                        • Zoltán Halassy
                                                                          Zoltán Halassy  16 hours back

                                                                          +Darkira Knight Sure, this "strength" what the popular wisdom is about is not a single-dimensional property (for example what you've just said, having immunity of a type doesn't mean we have protection in the other), and these wisdoms shouldn't be taken literally (and with a grain of salt). And I think being able to adapt is a kind of strength though, and these memory cells give that strength (in one dimension). The wisdom doesn't say the strength comes immediately (there is a "tired and damaged" phase), but if we survive that phase, then we got stronger: the same infection will not cause that "tired and damaged" phase anymore.

                                                                        • Darkira Knight
                                                                          Darkira Knight  17 hours back

                                                                          We adapt and being stronger is different.... Yup you're immune to the virus, but doesn't mean a less dangerous virus can't make you sick. Well cause you take the contexts, in the video. It explaining that when we sick and recover our immune system is "tired and damage". So to overcome it we have a memory cells.