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 • 75 977

  • 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.

    • Jordan Sutche
      Jordan Sutche  1 days back

      The fact you brought up Wakefield's "research" just proved you didn't actually look into it at all. That's a fact.

    • Haziq Aiman
      Haziq Aiman  1 days back

      Ok gus

    • A random Weeb
      A random Weeb  7 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!!!!

  • Irwan Nirwana
    Irwan Nirwana  7 minutes back

    Did u from u.s.a?

    • Bounced Off [In Making]
      Bounced Off [In Making]  31 minutes back

      Vaccines can kill and you should not promote it

      • Bounced Off [In Making]
        Bounced Off [In Making]  32 minutes back

        Some vaccines contain EXTREMELY DANGEROUS viruses that some kids can't take and they will die.

        • as
          as  37 minutes back

          Fake video. Vaccines cause more deaths than measles worldwide

          • Remer Mequiota
            Remer Mequiota  49 minutes back

            dat end music tho

            • Remer Mequiota
              Remer Mequiota  53 minutes back

              dont forget about dengue vaccines here in the phillipines

              • ryahmib
                ryahmib  1 hours back

                4:55 why your scenario take place in the MCU ?

              • ZapaX
                ZapaX  2 hours back

                This video is dedicated to Karen, an anti-vax mom.

                • Roblox Cringe
                  Roblox Cringe  3 hours back


                  • crackerjack fox
                    crackerjack fox  3 hours back

                    think of this vaccines are like care packages for you immune system get care pacgaegs and you bady will win e was a vaccinate you and your kids

                    • Illogikalli _
                      Illogikalli _  4 hours back

                      Anti vaccine people are retards

                      • Ryoss
                        Ryoss  6 hours back

                        8.1k people are antivaxxers named Karen

                        • aidan saikia
                          aidan saikia  8 hours back

                          saying vaccines are dangerous are like saying seatbelts cause car crashes

                          • The Shinto Railfan
                            The Shinto Railfan  1 hours back

                            No, @incativated, I had a fever of 103 Fahrenheit. Anything higher could've been lethal.

                          • incativated
                            incativated  2 hours back

                            @The Shinto Railfan I've had many times in my life where i felt like dying.

                          • The Shinto Railfan
                            The Shinto Railfan  2 hours back

                            ​You know, @incativated, I almost died when I was 11 because I wasn't vaccinated.

                          • incativated
                            incativated  3 hours back

                            @The Shinto Railfan I went through measles and I survived with without any vaccinations. Measles HAS a cure even if you get it and there is absolutely no need fo any vaccines the BigPharma wants to inject you with so badly. Do some research on what a basic chickenpox vaccine actually is and its content and then comeback let me know what you think.

                          • The Shinto Railfan
                            The Shinto Railfan  4 hours back

                            What are you talking about, @incativated?! We have tons of proof that they work!
                            When MMR was introduced in 1964, measles cases plummeted. For decades, measles cases in the U.S stayed below 100 per person every year. However, due to anti-vaccination crap, cases are on the rise again.

                        • velorien996
                          velorien996  8 hours back

                          BuT WhAt aBouT auTiSM?
                          There is nothing wrong with autism Karen it normally doesn't make someone unable to function properly unlike you

                          • Superior Mind Studios
                            Superior Mind Studios  8 hours back

                            Goddamn anti vaxxers🙄
                            In my country if u don't vaccinate you will definetly die
                            This I guarantee

                            • aidan saikia
                              aidan saikia  8 hours back

                              *T H I S P L E A S E S K A R EN T H E A N T I V A X E R*

                              • Sans Zockt
                                Sans Zockt  9 hours back

                                Germs when the Body is Vaccinated:
                                We've been fooled, We've been tricked and quite possibly Bamboozled.

                                Germs when the Body is not Vaccinated:
                                OMAE WA MOU SHINDERU

                                • Mazda 787B
                                  Mazda 787B  9 hours back

                                  Memory cells must have Vietnam flashbacks on the daily

                                  • Miles Gutierrez
                                    Miles Gutierrez  11 hours back

                                    Seatbelts are like the shock suits that storm troopers wear. In an accident where you absolutely would have died, the seatbelt could definitely save you, but in a smaller scale minor accident, it's more likely that the seatbelt is going to kill you or injure you than the car.

                                    • Gingerbrave
                                      Gingerbrave  11 hours back

                                      Vaccinate your kids or I'll shoot measles at you.
                                      AND IT WON'T BE WEAKENED VACCINE VARIETY EITHER

                                      • Guinness
                                        Guinness  12 hours back

                                        Russian intelligence have spread a lot of anti-vaxx bull online to stoke division. That along with political fake stories, they try to disrupt our societies. Apparently over the bodies of dead children

                                        • Haziq Aiman
                                          Haziq Aiman  13 hours back


                                          • Krishna Karma
                                            Krishna Karma  13 hours back

                                            Antivaxxers : Why to trust doctors and everyone else when we can trust a blogger oh kurzgesagt video that support us "clicks on the video" Why to trust youtube when we can trust the old blogger (ps: Personaly I can't imagine what makes people think like this even a illiterate one in my area understands that vaccine are soo important for their child as well as adults stupids antivaxxers lol)

                                            • Dl3 Yeah
                                              Dl3 Yeah  14 hours back

                                              Is it safe to say that anti-vax people are murderers?

                                              • Exxelenen Setijadi
                                                Exxelenen Setijadi  15 hours back

                                                *agrees in bacteriophage *

                                                • MYTHICAL ENTIRES
                                                  MYTHICAL ENTIRES  16 hours back

                                                  Anti-vaxx parents will agreed about this

                                                  • Mitch_ Camo
                                                    Mitch_ Camo  18 hours back

                                                    Saying vaccines causes autism is like saying seatbelts cause car crashes :/

                                                    • e l
                                                      e l  19 hours back

                                                      Autism does comes from these! Your facts are far off! When it comes to autism in tons of cases can be directly linked to specific shots required in the states! Video proof of children being outgoing normal children to non moving huge signs of autism directly after shots. It’s 2019 we all have tons of videos of our child now! All hit very high temperatures after vaccine then completely different child within 24 hours. Fact is you know nothing of what the government does outside of your books!!

                                                      • anti bully
                                                        anti bully  4 hours back

                                                        there is almost enough research to make a planet that says that vaccines do not cause autism.

                                                      • Nuclear Phantom
                                                        Nuclear Phantom  5 hours back

                                                        My friend has autism but has a 98 total average in 8th grade. Autism doesn’t make people stupid, they just aren’t the best with social interactions. And it also comes from genetics, not flu shots.

                                                      • SXLID
                                                        SXLID  8 hours back

                                                        Hi *karen*

                                                      • MrIndecisive
                                                        MrIndecisive  10 hours back


                                                      • NoX
                                                        NoX  13 hours back

                                                        Uno I'm still wondering if my 4 year old unvaccinated son was having a midlife crisis

                                                    • cyclopsdias
                                                      cyclopsdias  20 hours back

                                                      10:06 I feel so bad for the poor mommy bird that sees its young dead :(

                                                      • Firebossman77 Youtube
                                                        Firebossman77 Youtube  21 hours back

                                                        Man I hate anti vaxers

                                                        • EpicDingus
                                                          EpicDingus  24 hours back

                                                          Wait isn't autism linked to genetics? Idk tho I'm 15

                                                          • The Shinto Railfan
                                                            The Shinto Railfan  4 hours back

                                                            Somewhat. I think the main cause is older parents.

                                                          • Rip
                                                            Rip  10 hours back

                                                            @TmtoSouper That means you want to get the worst disease in the entire world...

                                                          • TmtoSouper
                                                            TmtoSouper  16 hours back

                                                            ye it is

                                                        • Quiet Girl
                                                          Quiet Girl  1 days back

                                                          9:36 Conclusion: VACCINATE YOUR DAMN KIDS

                                                          • Imran Qubbaj
                                                            Imran Qubbaj  1 days back

                                                            So basically we have a constant war in our bodies.......not scary at all....

                                                            • Angela Lakes
                                                              Angela Lakes  1 days back

                                                              Does 7th grade shots hurt I'm getting it tommorw

                                                              • Nighxmare
                                                                Nighxmare  17 hours back

                                                                Try not to tense your muscles in the area of injection. Distract yourself with something if it’s too hard. From my experience, it hurts the most when you tense your muscles, so try to stay calm. If you relax, it’s not that bad.

                                                              • WinxBattles Season3
                                                                WinxBattles Season3  19 hours back

                                                                Angela Lakes by “less than the disease” I mean it will hurt a bit, but getting the real thing instead is about 100 times worse

                                                              • Angela Lakes
                                                                Angela Lakes  23 hours back

                                                                @OwlSong UwU thank you sweetie

                                                              • OwlSong UwU
                                                                OwlSong UwU  23 hours back

                                                                I mean, it’s just like any other shot lol. It shouldn’t hurt too much. :) Just try to stay calm beforehand

                                                              • Angela Lakes
                                                                Angela Lakes  23 hours back

                                                                @WinxBattles Season3 my name is maria actually and um what does less than the disease mean

                                                            • Roy Rice
                                                              Roy Rice  1 days back

                                                              It's hard to undo even a false alarm.

                                                              • Roy Rice
                                                                Roy Rice  1 days back

                                                                Life causes death and they haven't found the vaccine yet that you can live with.

                                                                • Some Guy
                                                                  Some Guy  1 days back

                                                                  Thank God for PTSD cells

                                                                  • CaYlYa
                                                                    CaYlYa  1 days back

                                                                    I have adhd, it’s a gift and a curse

                                                                    • Fantasmic Art 2312
                                                                      Fantasmic Art 2312  1 days back

                                                                      There was an article about how Vaccines make kids autistic. Which was made by 13 authors. After further research of vaccines many years after the article was created, 10 authors of the articles wanted their names removed from the article to avoid embarrassment, harassment, etc.

                                                                      • The Shinto Railfan
                                                                        The Shinto Railfan  1 days back

                                                                        I also heard something about how they all lost their medical licenses.

                                                                    • Dylan Da Random
                                                                      Dylan Da Random  1 days back

                                                                      Now I’m vaccinated and autistic so I can’t wait to get into an argument with someone about “VaCcInEs cAuSe AuTiSm

                                                                      • moni_stylist and master chef Matt

                                                                        What the Mario bros say about vaccines

                                                                        Mario says: if we vaccinate we will be able to survive into adulthood

                                                                        Luigi says: out of the womb into the tomb

                                                                        • Jordan Sutche
                                                                          Jordan Sutche  1 days back

                                                                          Then explain the rise of autism next.

                                                                          • Vary Olla
                                                                            Vary Olla  59 minutes back

                                                                            The rise in detection which as noted Shinto is directly correlative to the variables I made note of.  Incidence of autism screening has risen = but then we are looking harder for it as the population in turn increases.  Accordingly one would expect to see a rise in identified cases even though also as noted those identified merely reflect some level of deficit rather than all being severely impaired. 

                                                                            So children such as those who might say 30 years ago would have simply fallen through the cracks of society are today being identified thanks to better surveillance.    Have a nice day.

                                                                          • The Shinto Railfan
                                                                            The Shinto Railfan  4 hours back

                                                                            What rise?

                                                                          • Vary Olla
                                                                            Vary Olla  8 hours back

                                                                            Follow the white rabbit Neo:

                                                                            1 - since 1980 as alluded to by others the US population as grown by 1/3rd = or about 100 million more people.
                                                                            2 - autism awareness began to take off in the early 1980's.  By the early 1990's the DSM definition was expanded to include more neurocognitive issues to create ASD.
                                                                            3 - a few years later the American Pediatric Association issued guidance for doctors to screen more aggressively for autism.
                                                                            4 - post-2000 has seen an increase in awareness + and increase in research.  Meanwhile expanded healthcare coverage has resulting in more children being seen regularly by doctors = thus more screenings happen.
                                                                            5 - also as a result of #4 the reporting system has improved making it easier to identify any children who are determined to have "some level" of deficit.  Note I said some level.  Many of those children reported live fairly normal lives and only have as noted varying degrees of deficit and do not automatically mean children with severe impairments.

                                                                            Moral of the story:  any time you increase a relative population + expand the definition of what you are looking for + devote more resources to finding that thing + and improve the system for reporting = you will invariably see more children swept up under that broader umbrella as we see.  Have a nice day.

                                                                          • MrIndecisive
                                                                            MrIndecisive  10 hours back

                                                                            Population growth

                                                                          • Tube Sock
                                                                            Tube Sock  19 hours back

                                                                            @Jordan Sutche as we become more intelligent, we will be able to diagnose autism more easily. The numbers aren't rising, we are just noticing them more. Also it's not like autism is worse than polio or measles.

                                                                        • Calvin
                                                                          Calvin  1 days 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  1 days back

                                                                            1:57 what about flu?

                                                                            • Ceft
                                                                              Ceft  1 days back

                                                                              @Kold 66 thank you

                                                                            • Kold 66
                                                                              Kold 66  1 days back

                                                                              Flu mutates often so they render immune systems useless

                                                                          • Haziq Aiman
                                                                            Haziq Aiman  1 days back

                                                                            Human can die only 3 second

                                                                          • Isaac Lepischack
                                                                            Isaac Lepischack  1 days back

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

                                                                            • bjorn joseph
                                                                              bjorn joseph  1 days back

                                                                              Jenny McCarthy Unliked this video 8.1k times

                                                                              • Omer Feldman Yofiël
                                                                                Omer Feldman Yofiël  1 days back

                                                                                Hahaha versions of this joke have made very nearly 8.1k appearances on this thread.