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

  • Published: 12 May 2019
  • Sources:

    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.

    If you are interested how much sponsorships influence our videos, we wrote about that in detail here:

    Support us on Patreon so we can make more videos (and get cool stuff in return):

    Kurzgesagt Newsletter:
    Kurzgesagt Merch:

    The music of the video here:

    THANKS A LOT TO OUR LOVELY PATRONS FOR SUPPORTING US:Marsha Sohn, Henri Holler, Michelle, Dan Crowley, Alex Hackman, Sammy Mikhael, Marcus Thorén, Kevin Harris, Jayami, Andreas Poletti, David Coates, Omar Galvis, Denny Zavada, Don Knowlton, Sebastian, Jay Ruthnam, Shakira Graham, MatBu, Mikhail, Sinan Taifour, Knowledge Unlimited, Odilia Krause, Anri Digholm, Dominykas, James Gaglio, Alice Jones, Narciso Jaramillo, Qaalid Hashi, Nate Bender, Gulyás Gergely, Michael Bloch, Rick Merced, Etienne Huguenot, Jonathan Lopez, Kai Smith, Benjamin Arndt, Philip Potvin, Amy Halter, Dylan polin, Zach Evans, Karan Chawla, Michael Casey, Francis Bouchard, William Gu, peck neck, Dien Buwono, Patrick Pruitt, Alexander Isayenko, Connor Doherty, Kierr Suñega, Kongpak Phupa, Lewis Foret, Daniel Ingegneri, David Saitta, Soeren Pollerhof, Ravi Shankar, Nico Kooyman, Anna Liceva, Dan Long, ADAM M., Cruz Godar, Pedro Caetano, Jean-Pierre Girard, Jonathan Piedrasanta, Jak SP, Jim Renney, Danielle Mitchell, Giorgio Valli, Ben Evans, Bill Cohen, Gitle Mikkelsen, Gemini00, Benjamin Mahoney, Christopher DiBattista, Mandy Reid, Gary Reckard, Sataporn Chaochonpun, Bigolf, Moses Malone, Kyle Merryman, Dante Bencivenga, Zeus Laser, Jake Wise, Jade, Fontaine Liu, Manav parmar, ethnicolor

    Help us caption & translate this video!

Comments • 66 301

  • Kurzgesagt – In a Nutshell

    Dive into sources and further reading here:

    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.

    • jsmyth024
      jsmyth024  2 days back

      I'm sorry, but we are the sickest species ON THE PLANET. Just think about that for ONE minute.
      Our gut microbiome is being sterilized by pesticides like round up, and we are told they are safe(yes, they kill the bacteria in your gut - shocker), but DON'T WORRY, they have something you can buy for that.

      We are developing autoimmune diseases left and right. A study was just released that shows how millennials health plummets at around age 27, and no one is concerned that it's something to do with out healthcare? "healthcare" - that's a misnomer at this point.

      The SAME people that push round-up as being safe(now proven to cause cancer in a court of law), "provide" us with cancer treatments and vaccines.

      The same people who sell us vaccines, treat our children of these chronic illnesses. NO ONE is brave enough(or intelligent enough) to raise an eyebrow to that?

      Oh, wait, they are, but then they are told they are just crazy conspiracy theorists who are probably literally hitler and voted for trump. And people fall for it because it makes them FEEL safe. Meanwhile over FIFTY PERCENT of our youth(YOUTH!) have chronic illnesses that the AMA says they will NEVER recover from. And it's not enough for these mega corps to make millions or billions, now they are pushing for trillions.

      That's not fishy to you guys?

      I swear, people have thrown common sense directly out of the nearest window for, "double blind published data" We will NEVER get it. There are too many variables involved and you know this, that's why you keep asking.

      Honestly it makes me sick and people who are working for them should be ashamed of themselves. They aren't, because they have money in the bank, but one day, people are going to have had enough and they will be found and prosecuted.

      How many more of our loved ones have to suffer and die before it gets to that point?

    • frick ajit pai
      frick ajit pai  4 days back

      Kurzgesagt – In a Nutshell epic

    • joel marin
      joel marin  4 days 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  2 weeks back

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

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

  • DaddyOCherrio
    DaddyOCherrio  21 minutes back

    I don't care if the Karens die

    they are a burden to this world

    • carlos benji
      carlos benji  1 hours back


      • june greenfield
        june greenfield  2 hours back

        Kurzgesagt: *creates video about anti vaxx people but lures them and educates them*

        Outstanding move

        • june greenfield
          june greenfield  2 hours back

          Unvaccinated kid: exists

          Almost extinct diseases: yeheah boy

          • june greenfield
            june greenfield  2 hours back

            *insert anti vaxx mom comment here*

            • bazoo513
              bazoo513  2 hours back

              You didn't mince words around 10:00, and rightfully so. Good work!

              • Mikko Tenhunen
                Mikko Tenhunen  2 hours back

                Best videos so far

                • Lordof Music 420
                  Lordof Music 420  2 hours back

                  send this to r/vaxx happened

                  • Muh im man Muhtadi
                    Muh im man Muhtadi  3 hours back

                    Our next step might be injecting memory cell genome directly to human genes..

                    • mawaddah ar
                      mawaddah ar  4 hours back


                      • Randomness with Micayla

                        This is clickbait

                        But it's the best clickbait ever

                        • Tai Perez
                          Tai Perez  4 hours back

                          Unfortunately, I highly doubt this video will reach many anti-vaxxers, so for now this comment section is just a circlejerk of faux intellectuals who think they’re smart for stealing old antivaxx jokes from reddit.

                          • fogsmash
                            fogsmash  4 hours back

                            i had a strange feeling the entire time in my right wrist while watching this and its uncomfortable

                            • LEMONS Patusky
                              LEMONS Patusky  5 hours back

                              7.4k people disliked the video but died of measles before they could undo

                              • Raphael Souza de Melo
                                Raphael Souza de Melo  5 hours back

                                Plot twist: anti-vaxxer just want the human species to go extinct.

                                • Raphael Souza de Melo
                                  Raphael Souza de Melo  5 hours back

                                  Vaccines are bad for the planet. They cause humans.

                                • Abby Voravudhi
                                  Abby Voravudhi  5 hours back

                                  when they said 95% of the people around you should be vaccinated, that made me want to go to school and be like "who in here is not vaccinated"

                                  • Ahmet Yakar
                                    Ahmet Yakar  5 hours back

                                    Guys you are just great

                                    • Liam Smiley
                                      Liam Smiley  7 hours back

                                      What does it mean to ignore self reporting and why do you ignore it. Im not arguing just curious and not very familiar with vaccines and vaccine terminology.

                                      • Geert Schaaij
                                        Geert Schaaij  8 hours back

                                        How to clickbait anti vaxxers

                                        • Bloggman
                                          Bloggman  9 hours back

                                          "They kill healthy children that are just unlucky", because their Mom is called Karen.

                                          • hen ko
                                            hen ko  10 hours back

                                            Bill & Melinda Gates refuse to vaccinate their own children dr Martin Gore popped minutes after getting his toxic fix but ignorance is best of all until it comes the time to pay for

                                            • Tanveer Fatima
                                              Tanveer Fatima  10 hours back

                                              A medicine board somewhere in the world:
                                              The anti vaxxers are gaining power
                                              Another member: I have a solution,
                                              instead of calling them anti vaxxers we should call them pro disease!

                                              • Dyandra Clevia
                                                Dyandra Clevia  11 hours back

                                                So... Vaccines are basically injections filled with bacteria that might harm us...and we use them so our immune system get used to them and make new memory cells, oh.. Ok... Now we have an even more reason to be scared of vaccines

                                                • Dyandra Clevia
                                                  Dyandra Clevia  2 hours back

                                                  +James Dolezal Yeet yeah thats why i commented

                                                • James Dolezal Yeet
                                                  James Dolezal Yeet  3 hours back

                                                  Did you watch the video

                                                • Dyandra Clevia
                                                  Dyandra Clevia  3 hours back

                                                  +Dreadking Rathalos ok first of no i wont cherry pick at your facts dont worry, and second thank you for the clarification

                                                • Dreadking Rathalos
                                                  Dreadking Rathalos  5 hours back

                                                  Let me break this down.
                                                  In _live_ vaccines, a dying or severely weakened form of a virus is put into a vaccine, and injected into the body. A person will often experience mild syptoms of the virus before their body analyzes and creates antibodies for the virus.
                                                  When a real, unweakened, or "wild" version of the virus attacks, the bod will have a much easier time fighting it off.

                                                  *_Side note- while the ingredients uses to weaken the vaccine are poisonous, they are in such little concentration that the body can easily deal with it with no harm done to you._*

                                                  Don't attempt to cherry pick facts from what I've said, and if you do, your argument is automatically invalidated.

                                                • Dyandra Clevia
                                                  Dyandra Clevia  7 hours back

                                                  +Shizu but still doe, it sounds fascinating

                                              • 2020 Lollipop Christmas
                                                2020 Lollipop Christmas  11 hours back


                                                • BEASTINNATIVE
                                                  BEASTINNATIVE  12 hours back

                                                  Fucking N U K E D

                                                  • ABDI ANIMATION
                                                    ABDI ANIMATION  13 hours back

                                                    I have no vaccines! I'm happy!

                                                  • Whirlwind12 GMD
                                                    Whirlwind12 GMD  13 hours back

                                                    I can't find antivaxxers. I will pretend to be one. This should be fun.

                                                    Stupid people looking at this video... it isn't even real! Vaccines have loads of harmful ingredients in them such as Aluminium, Taste improvers (I am not even joking, that's in there) Thiomersal <--- THATS A TYPE OF MERCURY, and GMO's. We should be ALL NATURAL
                                                    Be organic as much as possible! Wash your hands, be hygienic. Big pharma is poisoning us and we will all be autistic!

                                                    • Denis Danger
                                                      Denis Danger  38 minutes back

                                                      +Whirlwind12 GMD anti vaxxer = Stupidness

                                                    • Whirlwind12 GMD
                                                      Whirlwind12 GMD  1 hours back

                                                      James Dolezal Yeet youre supposed to reply like that. I am an anti vaxxer (not actually) come at me

                                                    • James Dolezal Yeet
                                                      James Dolezal Yeet  3 hours back

                                                      +Denis Danger she's joking

                                                    • Denis Danger
                                                      Denis Danger  8 hours back

                                                      no one has been able to prove it

                                                  • jsmyth024
                                                    jsmyth024  15 hours back

                                                    The idiocy in this comments section is absolutely staggering. You guys REALLY think this video is educational? I bet you think Bill Nye and Myth Busters are just peachy and have an "I fucking love science" t-shirt, dontcha? You know what feels even better than acting like you're smart? Actually doing your research and knowing what you're talking about.
                                                    But you know what's easier than thinking for yourself? Letting other people think for you. Then you make "savage" comments about people who dare to disagree, while projecting your stupidity onto them(by calling them stupid).
                                                    Hell, most of you haven't even been able to read long enough to make it to the end of this comment. TL;DR! LOL! But if you have, I'll commend you and ask you not to believe me. DO your own research and particularly, look into the work of Dr. Shoenfeld. His resume and qualifications are so extensive that I can't even post it all without copy/pasting, and that gets my comments deleted. He's dedicated his entire life to studying autoimmune diseases. He says vaccines are causing them when you have the right genetics for it. That's why not everyone gets them. He has videos on youtube. You can read his qualifications there(one being the HEAD CHAIR of medicine at TEL AVIV university(the most prestigious university in Israel and top ten in the world outside of the US). Over 1600 published papers and he's been cited by professionals over 20,000 times. He's no quack. Look into it. Or keep letting other people think for you and hope you never lose a loved one to chronic illness that you could have stopped if you weren't so damn lazy/distracted/willfully ignorant.

                                                    • Whirlwind12 GMD
                                                      Whirlwind12 GMD  1 hours back

                                                      d3ds1r the programmer several times. yes

                                                    • jsmyth024
                                                      jsmyth024  5 hours back

                                                      Yeah, no, I actually read the studies and listen to what these men have to say and think about it. I ask myself, does it make sense to me? Just because I recommend someone's work, doesn't mean they're thinking for me.

                                                      At least one of you took the time to look into it. If you don't agree with it, then that's your descision.

                                                    • jsmyth024
                                                      jsmyth024  5 hours back

                                                      +Andrés González Does that usually work on people? If anyone takes your word over one of the TOP MEN IN THE ENTIRE WORLD, then they're fools and I really feel sorry for them. Not tritely, but I honestly feel bad for them because they're gonna suffer in life.

                                                    • d3ds1r the programmer
                                                      d3ds1r the programmer  7 hours back

                                                      Whirlwind12 GMD have you watched the video?

                                                    • Andrés González
                                                      Andrés González  7 hours back

                                                      "Do you own research and specifically look up this specific doctor" hahahahahaha
                                                      Shoenfeld has presented no vigorous clinical or epidemiological evidence supporting his claims.
                                                      There are many rigorous studies that directly contradict the ridiculous hypothesis of that Dr

                                                      Your comment is nonsense

                                                  • Harvey Sun
                                                    Harvey Sun  17 hours back

                                                    Can you please make a video about a black hole vs everything in the universe? Thanks!

                                                    • Rio Agustian
                                                      Rio Agustian  18 hours back

                                                      _"One, since video started"_


                                                      • PixelizedKitten
                                                        PixelizedKitten  18 hours back

                                                        Wtf everyone... I support every antivaxxer out there.

                                                        It’s survival of the fittest, the less spawns they have, the better.

                                                        • James Dolezal Yeet
                                                          James Dolezal Yeet  3 hours back

                                                          +Shizu ^

                                                        • Shizu
                                                          Shizu  7 hours back

                                                          The antivaxxer parents are vaccinated most of the times. It's the innocent children that die the most

                                                      • Ryan Aint Gamin'
                                                        Ryan Aint Gamin'  18 hours back

                                                        the 7.4k people who disliked are the anti vaxxers that got jabaited by the clickbait title that “proves their point”

                                                        • panggop jio
                                                          panggop jio  19 hours back

                                                          I wanna bet $600 that all the dislikes on tgis video are anti-vaxxers

                                                          • Whirlwind12 GMD
                                                            Whirlwind12 GMD  14 hours back

                                                            *Dislikes video and isn't an antivaxxer*

                                                            *_pay up, sucker_*

                                                        • PhantomGamerHD
                                                          PhantomGamerHD  19 hours back

                                                          3:06 Wasted

                                                        • Evan Thomas
                                                          Evan Thomas  19 hours back

                                                          Unfortunately, one of the devastating conditions I received from big pharma as a vaccine injured child, I've been diagnosed with:
                                                          Living over the age of five
                                                          Not dying in measles outbreaks
                                                          Not being sick constantly
                                                          Being unable to spread deadly disease to those who are unable to get vaccinated

                                                          Please pray for me 😭😭😭 It's difficult waking up every day to find out that I'm not going to die of easily preventable disease.

                                                          • Musicman928
                                                            Musicman928  20 hours back

                                                            Came here for triggered anti-vaxxers, was disappointed ☹️

                                                            • Zyzynx
                                                              Zyzynx  20 hours back

                                                              Anti-Vax mom:Clicks on video
                                                              Kurzgesagt:You fool. You fell victim to one of the classic blunders.

                                                              • Plague Seeker
                                                                Plague Seeker  21 hours back

                                                                Overpopulation is the biggest side effect of vaccines.

                                                                • Don Voltonus
                                                                  Don Voltonus  21 hours back

                                                                  One note for the creator of the vid, you should also take care WHO give you vaccines. Under-trained pharmacists have had a few cases of accidentally injecting joints with flu-shots, and causing permanent damage.

                                                                  • Shizu
                                                                    Shizu  2 hours back

                                                                    +James Dolezal Yeet giving*

                                                                  • James Dolezal Yeet
                                                                    James Dolezal Yeet  3 hours back

                                                                    I personally was given the wrong vaccine. But this video mainly looks at vaccines themselves, not the dumbasses behind making them.

                                                                  • Shizu
                                                                    Shizu  7 hours back


                                                                • b4lt4z4rG
                                                                  b4lt4z4rG  21 hours back

                                                                  Bill & Melinda Gates refuse to vaccinate their own children
                                                                  dr Martin Gore popped minutes after getting his toxic fix

                                                                  but ignorance is best of all until it comes the time to pay for it

                                                                  • Tautologist
                                                                    Tautologist  19 hours back

                                                                    The story about Bill Gates not vaccinating his kids is from a writer for one of the most infamous misinformation news websites on the internet. It's called "YourNewsWire" - look it up. If you want to believe that fake news then that really shows who's ignorant here. Also, the Martin Gore tragedy, while sad, is not some unexpected phenomena. Everyone knows that, in rare cases, vaccines can cause some serious side effects, especially for someone Gore's age. The thing is, the risks involved with the yellow fever vaccine that he died from are much less serious then the disease it prevents.

                                                                • The sick Cichled
                                                                  The sick Cichled  21 hours back

                                                                  Can you debunk flat earth please
                                                                  Please vote one like one vote one dislike one less vote

                                                                  • Sanhinda Peiris
                                                                    Sanhinda Peiris  13 hours back

                                                                    +Whirlwind12 GMD yeah for me it's like the lesser of two stupidities...

                                                                  • Whirlwind12 GMD
                                                                    Whirlwind12 GMD  14 hours back

                                                                    People actually have reasons for being antivaxx, but plain stupidity is being a flat earther.

                                                                  • Sanhinda Peiris
                                                                    Sanhinda Peiris  17 hours back

                                                                    +Rui Wang agreed...

                                                                  • Rui Wang
                                                                    Rui Wang  18 hours back

                                                                    The sick Cichled Its just a waste of time.

                                                                • Leo Raykher
                                                                  Leo Raykher  22 hours back

                                                                  is it possible to be patriotic for your own body cuz thats what I was feeling at the beginning of the video lmao

                                                                  • Plinkplink Fizz
                                                                    Plinkplink Fizz  22 hours back

                                                                    Brilliant! Show me an anti vaccination supporter and I will show you an idiot.

                                                                    • Whirlwind12 GMD
                                                                      Whirlwind12 GMD  14 hours back

                                                                      Look at the comment below yours. there is an antivaxxer named Ese Callum

                                                                  • Ese Callum
                                                                    Ese Callum  22 hours back

                                                                    Remember: Vaccines can cause serious health problems including brain inflammation and autoimmune disorders, allergies, ear infections, and more There's a very real association between vaccine complications and learning and behavioral disorders in children The components of vaccines have never been proven safe The ingredients and contaminants in vaccines can be detrimental to your health There are far safer and more effective ways to protect your children and yourself against disease. For example, a Japanese study from last year showed that school children taking vitamin D3 supplements were 58 percent less likely to catch influenza A. That's a higher effectiveness than any flu vaccine can claim, and doesn't come with a barrage of potentially devastating side effects!

                                                                    • ConJared
                                                                      ConJared  57 less than a minute back

                                                                      +Ese Callum
                                                                      "Last night a 22 year old man was killed for $5."

                                                                      I would love to see a your sources on that one.

                                                                    • TheLorenzo00601
                                                                      TheLorenzo00601  7 hours back

                                                                      +Ese Callum Eh, as long as I'm alive and well, I'm fine.

                                                                    • Ese Callum
                                                                      Ese Callum  7 hours back

                                                                      +TheLorenzo00601 I do my research from a huge range of diverse sources world wide unlike you who listens to mainstream media which derives a whopping 60% of their income from the big pharma adverstising. Always follow the momey trail. Last night a 22 year old man was killed for $5.
                                                                      Big pharma makes $44 BILLION from vaccines.They hope to boost to 100 billion within 5 years and have 217 vaccines in development. $44 billion reasons to lie cheat,blackmail, steal ,kill ,murder and maim.

                                                                    • Shizu
                                                                      Shizu  7 hours back

                                                                      +TheLorenzo00601 more importantly. Most of these if not all are completely unrelated to the topic at hand.
                                                                      Or else, what's the relationship between vaccines and 'whats better, avoiding sunlight or vitamin D deficiency'???????
                                                                      Or any papers with cancer.
                                                                      Completely useless for this discussion

                                                                    • TheLorenzo00601
                                                                      TheLorenzo00601  9 hours back

                                                                      How many docs do you have open at a time m8

                                                                  • ChaosLord
                                                                    ChaosLord  23 hours back

                                                                    Another great video on an important topic, but I think it fell short on the most important point to make to anti-vaxxers: vaccines and Autism. Yes, you said they don't cause Autism, but there's no explanation for why people think that. Mainly, the similar age between when Autism can be diagnosed and when vaccines are given, but this correlation is not causation. Both vaccines and diagnosing Autism happen around the same age for completely separate but specific reasons, which are not at all related to each other. THAT is the information anti-vaxxers need to hear.

                                                                    • Bradley Bridge
                                                                      Bradley Bridge  24 hours back

                                                                      Anti vaccination humans