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

  • Published: 12 May 2019
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    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?

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Comments • 75 757

  • 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.

    • Haziq Aiman
      Haziq Aiman  2 hours back

      Ok gus

    • A random Weeb
      A random Weeb  6 days back

      500 comments boiiiiiiiiiiiiiiiiii.

    • strange times
      strange times  3 weeks back

      HAHAHA, Google's largest shareholders are PHARMA companies and your ONLY source of data is Google? HAHAHAHAHAHAHAHAHAHA!!!!

    • luigios11 mario
      luigios11 mario  3 weeks back

      i have a feeling that every single anti vax will freak out as soon as you say there's a catch

  • Calvin
    Calvin  16 minutes back

    I really love that they used the MCUs mutilverse number ID and snuck in the Avengers Tower and helicarrier in there. 👌 although if this is a time before Stark dies no way would it be a world where they stop vaccination.

    • Ceft
      Ceft  59 minutes back

      1:57 what about flu?

      • Haziq Aiman
        Haziq Aiman  2 hours back

        Human can die only 3 second

        • Isaac Lepischack
          Isaac Lepischack  2 hours back

          Most kids think that fevers are good ‘cause ya get to skip school!

          • bjorn joseph
            bjorn joseph  3 hours back

            Jenny McCarthy Unliked this video 8.1k times

            • doug cane
              doug cane  3 hours back

              if vaccines are so great why is the longevity of the US population actually going down?

              • Some Pig
                Some Pig  4 hours back


                • Kos or some say Kosm
                  Kos or some say Kosm  6 hours back

                  Child: (is unvaccinated)

                  Diseases: It's free real estate

                  • Montagne
                    Montagne  8 hours back


                    • Arttu Kettunen
                      Arttu Kettunen  9 hours back

                      pffft.. If I was a virus or bacteria I wouldn't reproduce

                      • Biswatosh Purkayastha
                        Biswatosh Purkayastha  9 hours back

                        Google is full of misinformation, cynics, myths and all . There is always benefits and side effects of everything but this video nicely enlightens that how to be rightly informed and assess that benefits over the minuscule of side effects . So we people need to be more logical rather than being always critics and cynical. Great video and the eye opener for the many.

                        • Biswatosh Purkayastha
                          Biswatosh Purkayastha  9 hours back

                          Nice and informative science

                          • Mr jimjimjimmyjim
                            Mr jimjimjimmyjim  10 hours back

                            why dont memory cells get passed on to the next generation? or do they?

                            • Wes Lindsey
                              Wes Lindsey  11 hours back

                              Im an anti vaxxer! Please crucify me with your hive mind and repetitive jokes.

                              My arguement... it shouldnt be the fucking law to accept a "practice" (which is what medicine is. Its not a fucking science.)

                              The government doesnt have the right to tell you what to put in your body. Thats the fucking arguement. Not whether they work or not. Its the fucking right to be able to choose what goes in your body and your kids. Your allowed to have your OWN ideas and beliefs. You all are probably the same idiots that think the sun has nothing to do with climate change. I bet none of you even know what solar forcing is. Anyways...

                              Please be as rough as you like. 😈

                              • Matthew Godfrey
                                Matthew Godfrey  1 hours back

                                Herd immunity

                              • Joedoeem
                                Joedoeem  2 hours back

                                BITCH UR KIDS GONNA DIE BEFORE SCHOOL

                              • fufhsi euenbeffb
                                fufhsi euenbeffb  2 hours back

                                That’s all well and good except your “beliefs” harm others that are vaccinated

                              • MrIndecisive
                                MrIndecisive  5 hours back

                                They do have the right to let a child live past the age of 2

                              • Axel Legaspi
                                Axel Legaspi  8 hours back

                                This not cool vaccines are are cool 😎

                                You also went to a video explaining how vaccines help people and just go to the comments, probably not watching the video and tell people why the government should not force us to put vaccines in us because we have rights

                            • Moha Jordan
                              Moha Jordan  13 hours back

                              vaccines are like hacks in the system so viruses can't attack

                              • Walter Smith
                                Walter Smith  14 hours back

                                Why use cartoons to talk about real dangers?
                                Seems that your mocking illness and death.

                                • MrIndecisive
                                  MrIndecisive  5 hours back

                                  Jumping to conclusions like

                                • Axel Legaspi
                                  Axel Legaspi  8 hours back

                                  He uses cartoons to help people understand these concepts making it informative and entertaining to watch at the Same time

                                • Meme Lord
                                  Meme Lord  12 hours back

                                  bruh you dumb

                              • LimitedSauce
                                LimitedSauce  14 hours back

                                Shouldnt countries just place anti-vaxxers on suicide watch?

                                • TheFrench Waffel
                                  TheFrench Waffel  15 hours back

                                  1:51 Me remembering I have homework after a deep sleep.

                                  • Blooky the mememan.
                                    Blooky the mememan.  16 hours back

                                    Clickbaited a antivax group lol, they said the video was “fake” and that “i want to kill their children”

                                    • Realist Dude
                                      Realist Dude  17 hours back

                                      Anti vaxxers disliked this video 1 like equals 1 non immume kid getting vaccinated secretly

                                      • R D
                                        R D  19 hours back

                                        BuT YoU FoRGoT To MEntIoN EsSenTiAl Oils!!!!!!!! >:(

                                        Please do a vid on essential oils and their anti-autism benifits :)
                                        Thanks, Karren

                                        • your mom
                                          your mom  20 hours back

                                          I KNEW VACCINES CAUSED AUTISM REEEEE.

                                          • The lightning Rod
                                            The lightning Rod  21 hours back

                                            After I say this I’m glad I’m vaccinated

                                            • Jackson Worthman
                                              Jackson Worthman  22 hours back

                                              The dislikes are from anti-vaxxing child murderers.

                                              • Haley Morrell
                                                Haley Morrell  22 hours back

                                                The main side effect of vaccines are crying children

                                              • Blu Laza
                                                Blu Laza  22 hours back

                                                Sort comments by newest first. Its wild.

                                                • Amar Mann
                                                  Amar Mann  23 hours back

                                                  Is the decline in measles in the developed world largely due to vaccines or improved sanitation and nutrition? Do any of the studies showing no link between vaccines and autism study the effect of multiple vaccinations in a relatively short time (i.e. what happens in real life)?

                                                  • The Shinto Railfan
                                                    The Shinto Railfan  22 hours back

                                                    Seeing that measles cases plummeted to below 100 per year after MMR was introduced, I'm pretty sure it was MMR.

                                                • The Shinto Railfan
                                                  The Shinto Railfan  23 hours back

                                                  I didn't vaccinate when I was in 5th grade. Then, I got a fever of 103 F. I heard that a fever higher than that can kill you, meaning I almost died. PLEASE vaccinate yourself, and encourage others to also do so.

                                                • Actual Human Filth
                                                  Actual Human Filth  1 days back

                                                  I’m not going to vaccinate my children because I’m retarded.

                                                  • Omer Feldman Yofiël
                                                    Omer Feldman Yofiël  1 days back

                                                    Lol... Makes me wish I had a British accent and unfettered access to a pharmaceutical company's advertising agency.

                                                    • Omer Feldman Yofiël
                                                      Omer Feldman Yofiël  25 minutes back

                                                      @Vary Olla amazing the lengths people will go to, to justify their decision to not weigh evidence. Are you the reason that character assassination works, or are you the intended victim? I'd tell to draw your own conclusions, only clearly you've not you the background to do so. Watch the video, since you clearly know nothing of what's in it!?!?!?!!!

                                                    • Vary Olla
                                                      Vary Olla  1 hours back

                                                      Vaxxed = pseudo-scientific "documentary" created by known anti-vaxxers with a history of misrepresentation of the science.  Wakefield was drummed out of the medical field for making dubious claims about vaccines and autism and then seeking to potentially profit from those claims. 

                                                      Meanwhile it was produced by an individual who also runs an anti-vaxxer group which has as it's president an individual who likewise represents a Foundation which funds anti-vaccine claims.  Meanwhile people in the video such as Hooker represent known anti-vaxxer "researchers" who for years have perpetuated dubious pseudo-scientific claims about vaccines.  These people are likewise affiliated with anti-vaccine groups who often fund their supposed "research" and in the case of Hooker have had papers retracted for questionable methodology to arrive at their supposed conclusions.

                                                      Moral of the story:  I have no need to watch a video which emanates from known discredited people and which merely parrots pseudo-scientific claims which the anti-vaccine industry - and yes it is indeed an industry by the way - has perpetuated for years now as I am all too familiar as you see with what those claims represent.  As the old saying goes:  _"garbage in ---------> garbage out."_  You need to find more credible sources of information I'm afraid.  Have a nice day.

                                                    • Omer Feldman Yofiël
                                                      Omer Feldman Yofiël  3 hours back

                                                      @Vary Olla thank you for your comments. Can you clarify whether you have in fact watched Vaxxed?

                                                    • Vary Olla
                                                      Vary Olla  4 hours back

                                                      _"watch the case made by the opposition, and draw _*_your own_*_ conclusions."_  = source of all your deductive fallacies Omer.

                                                      There is no "your own conclusions".  There is only real science = and then there is pseudo-scientific claims which most often reflect an underlying ideological bias towards vaccination in general.  So you apparently believe - as others often do - that your "opinion" is what matters = afraid not.  What people choose to believe or not in truth matters little as people frequently can and do convince themselves of all kinds of silliness - most often as a result of ignorance of the topic at hand. 

                                                      If you do not understand the science = you will be unable to discern between what is credible and what represents facile dubious assertions.  So in actuality the anti-vaccination movement is a good example of Dunning-Kruger Effect.  It's minions mistakenly believe they understand the science behind vaccination - when they so clearly do not - and it is that ignorance which prevents them from forming correct deductions about it.  That condemns them to a vicious cycle of poor deductions which ultimately feed back upon themselves. 

                                                      Moral of the story:  belief is easy...................proof on the other hand is difficult.  So it's not what you believe that matters = only what credible evidence if any is behind said belief.  The supposed "evidence" the anti-vaxxers regurgitate online along with their mundane conspiracy theory rationalizations are nonsense I'm afraid.  Have a nice day.

                                                    • MrIndecisive
                                                      MrIndecisive  5 hours back

                                                      Omer Feldman Yofiël i guess there also advertising the end of the universe and making bombs out of black holes then.

                                                  • Rage Mgr
                                                    Rage Mgr  1 days back

                                                    Memory cell is wise.

                                                  • Lil’saprel gaming
                                                    Lil’saprel gaming  1 days back

                                                    Oh so your not an anti-vaxer

                                                    • Meme Lord
                                                      Meme Lord  12 hours back

                                                      yeah watch the video before commmenting

                                                  • Lil’saprel gaming
                                                    Lil’saprel gaming  1 days back

                                                    Shut up anti-vaxer

                                                    • Thecatlover 26
                                                      Thecatlover 26  9 hours back

                                                      Lil’saprel gaming wow did you even watch the vid first

                                                  • Haziq Aiman
                                                    Haziq Aiman  1 days back

                                                    There virus

                                                    • Haziq Aiman
                                                      Haziq Aiman  8 minutes back

                                                      @Meme Lord ok

                                                    • Meme Lord
                                                      Meme Lord  22 minutes back

                                                      @Haziq Aiman i cant understand you

                                                    • Haziq Aiman
                                                      Haziq Aiman  30 minutes back

                                                      You need wash you hans but no virus

                                                    • Meme Lord
                                                      Meme Lord  34 minutes back

                                                      @Haziq Aiman but vaccines arent dangerous

                                                    • Haziq Aiman
                                                      Haziq Aiman  42 minutes back

                                                      You meet the danger 🎫

                                                  • Normally normal Man 38

                                                    When you find out your not vaccinated:ahhh PISS Today I’m gonna die piss

                                                    • Ryan The Lion
                                                      Ryan The Lion  1 days back

                                                      You can thank science for this video, I hope you can convince more people that the miracle of modern medicine is worth more than spreading a plague that was ONCE a problem

                                                      • Omer Feldman Yofiël
                                                        Omer Feldman Yofiël  14 hours back

                                                        @The Shinto Railfan whoever made it, made it by agenda. It's well scripted and slick, and you can only tell the inordinate bias if you happen to have seen the case made by the opposition, a case that's not mentioned here or very much anywhere. The video functions like a part of an extremely effective disinformation campaign - and who has both money and motive to carry it out, but for a pharmaceutical firm?

                                                      • The Shinto Railfan
                                                        The Shinto Railfan  23 hours back

                                                        Actually, I don't think they paid for this, @Omer Feldman Yofiël.

                                                      • Omer Feldman Yofiël
                                                        Omer Feldman Yofiël  1 days back

                                                        You can thank the pharmaceutical firms that paid for it, actually.

                                                    • bmn236
                                                      bmn236  1 days back

                                                      I sneezed on a anti axel and they actually just turned to dust, please help me what do I do?

                                                      • Toaster my Boaster
                                                        Toaster my Boaster  1 days back

                                                        So it’s basically a cell with PTSD from war..
                                                        **Vietnam flashbacks hit**

                                                        • XxAce_playzXx gacha
                                                          XxAce_playzXx gacha  1 days back

                                                          Is influenza dangerous

                                                          • MrIndecisive
                                                            MrIndecisive  5 hours back

                                                            Omer Feldman Yofiël 54700 died this year cuz of it.

                                                          • Omer Feldman Yofiël
                                                            Omer Feldman Yofiël  14 hours back

                                                            @Corey Playz so do morons, but my immune system hasn't been impressed by the latest versions....

                                                          • Corey Playz
                                                            Corey Playz  22 hours back

                                                            Omer Feldman Yofiël The flu mutates every year...

                                                          • Omer Feldman Yofiël
                                                            Omer Feldman Yofiël  1 days back

                                                            Only if you have a serious case of malnutrition, or unusually poor circulation, or another immuno-compromising condition, such as infancy, aids, or advanced old age. Otherwise, you'll probably not even catch it.

                                                          • Just a Guy
                                                            Just a Guy  1 days back

                                                            Yes, It can be

                                                        • The Pink Slime
                                                          The Pink Slime  1 days back

                                                          this is one of the single best videos I have ever watched.

                                                          • error ninja101
                                                            error ninja101  1 days back

                                                            i have been vaccinated before and the thing my dad does is after every shot we go home and put ginger on that spot so that if the pharmaceutical companies decide to make a vaccine that DOES do more harm than good all the bad stuff is sucked out of our body leaving only the good stuff inside and yes it does help but is more of a just in case trap card

                                                            • Meme Lord
                                                              Meme Lord  12 hours back

                                                              i think your dad did that to calm you down

                                                            • B E A N O S
                                                              B E A N O S  23 hours back

                                                              That not how it works

                                                            • Just a Guy
                                                              Just a Guy  1 days back

                                                              That’s not how it works. That not how it works at all.

                                                            • eeeaten
                                                              eeeaten  1 days back

                                                              error ninja101 XD what do you think the ginger does?

                                                          • Jason Schwarzman
                                                            Jason Schwarzman  1 days back

                                                            I wish you guys would change the thumbnail... Seeing an adorable baby cry makes me upset

                                                          • Hey Eaglet
                                                            Hey Eaglet  2 days back

                                                            cue antivaxxers!

                                                            • Karter Kowalski
                                                              Karter Kowalski  2 days back

                                                              The 8.1K dislikes are the Karen army.

                                                              • Ryan Belcher
                                                                Ryan Belcher  2 days back

                                                                The best argument I have had the pleasure of dealing with is the antivaxer say that in paraphrasing "the study is fake news and government misdirection" it was in that moment that I realized it was time to nope the flip out

                                                                • Corey Playz
                                                                  Corey Playz  23 hours back

                                                                  @Ryan Belcher Wait, really? Some people are just stupid.

                                                                • Omer Feldman Yofiël
                                                                  Omer Feldman Yofiël  1 days back

                                                                  @Ryan Belcher for sure that's a good place to start the investigation.

                                                                • Ryan Belcher
                                                                  Ryan Belcher  1 days back

                                                                  @Omer Feldman Yofiël basically they are saying you can only trust your own experience and that anything else is probably a lie that society is telling you to brainwash you into submission

                                                                • Omer Feldman Yofiël
                                                                  Omer Feldman Yofiël  1 days back

                                                                  I'm sure I'm not the only one who's not sure what you're trying to say.

                                                              • Professor Youtube
                                                                Professor Youtube  2 days back

                                                                Memory cells when disease strikes: *VIETNAM FLASHBACKS*

                                                                • Mason
                                                                  Mason  2 days back

                                                                  Thank you