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 • 75 713

  • 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.

    • A random Weeb
      A random Weeb  5 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

  • Wes Lindsey
    Wes Lindsey  1 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. 😈

    • Moha Jordan
      Moha Jordan  4 hours back

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

      • Walter Smith
        Walter Smith  4 hours back

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

      • LimitedSauce
        LimitedSauce  5 hours back

        Shouldnt countries just place anti-vaxxers on suicide watch?

        • TheFrench Waffel
          TheFrench Waffel  5 hours back

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

          • Blooky the mememan.
            Blooky the mememan.  6 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  7 hours back

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

              • R D
                R D  9 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  10 hours back


                  • The lightning Rod
                    The lightning Rod  11 hours back

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

                    • Jackson Worthman
                      Jackson Worthman  12 hours back

                      The dislikes are from anti-vaxxing child murderers.

                      • Haley Morrell
                        Haley Morrell  12 hours back

                        The main side effect of vaccines are crying children

                      • Blu Laza
                        Blu Laza  12 hours back

                        Sort comments by newest first. Its wild.

                        • Amar Mann
                          Amar Mann  13 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  12 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  14 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  14 hours back

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

                            • Omer Feldman Yofiël
                              Omer Feldman Yofiël  17 hours 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  3 hours back

                                @Corey Playz the video takes an educational stance, ie is meant to look like objective information for intelligent people who want to know about an issue they have not themselves studied. But it is not true to its intention, since it ignores the serious charges laid against the mmr vaccine, the manufacturer, Merck, and the oversight body in charge, the cdc. Since the video is so well informed about the case for vaccines, I cannot believe that the producers have not heard of the case against. Therefore they must have made a decison to ignore the evidence for the case against. Therefore they are an interested party, ie biased, ie bought and paid for.

                              • Corey Playz
                                Corey Playz  4 hours back

                                Omer Feldman Yofiël what does that have to do with this?

                              • Omer Feldman Yofiël
                                Omer Feldman Yofiël  4 hours back

                                @Corey Playz do you mean the script? Don't you see the pharmaceutical interest in keeping they public pleased about vaccine safety? And have you or haven't you seen Vaxxed?

                              • Corey Playz
                                Corey Playz  4 hours back

                                @Omer Feldman Yofiël Look at the lines. It’s not in any way advertising

                              • Omer Feldman Yofiël
                                Omer Feldman Yofiël  4 hours back

                                @Vary Olla watch the case made by the opposition, and draw your own conclusions.

                            • Rage Mgr
                              Rage Mgr  18 hours back

                              Memory cell is wise.

                            • Lil’saprel gaming
                              Lil’saprel gaming  18 hours back

                              Oh so your not an anti-vaxer

                              • Meme Lord
                                Meme Lord  2 hours back

                                yeah watch the video before commmenting

                            • Lil’saprel gaming
                              Lil’saprel gaming  18 hours back

                              Shut up anti-vaxer

                              • Haziq Aiman
                                Haziq Aiman  20 hours back

                                There virus

                              • Normally normal Man 38
                                Normally normal Man 38  21 hours back

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

                                • Ryan The Lion
                                  Ryan The Lion  22 hours 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  4 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  14 hours back

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

                                  • Omer Feldman Yofiël
                                    Omer Feldman Yofiël  18 hours back

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

                                • bmn236
                                  bmn236  22 hours 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  23 hours 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

                                      • Omer Feldman Yofiël
                                        Omer Feldman Yofiël  4 hours back

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

                                      • Corey Playz
                                        Corey Playz  12 hours back

                                        Omer Feldman Yofiël The flu mutates every year...

                                      • Omer Feldman Yofiël
                                        Omer Feldman Yofiël  18 hours 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  22 hours 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  2 hours back

                                          i think your dad did that to calm you down

                                        • B E A N O S
                                          B E A N O S  13 hours back

                                          That not how it works

                                        • Just a Guy
                                          Just a Guy  22 hours 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  1 days back

                                        cue antivaxxers!

                                        • Karter Kowalski
                                          Karter Kowalski  1 days back

                                          The 8.1K dislikes are the Karen army.

                                          • Ryan Belcher
                                            Ryan Belcher  1 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  14 hours back

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

                                            • Omer Feldman Yofiël
                                              Omer Feldman Yofiël  15 hours back

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

                                            • Ryan Belcher
                                              Ryan Belcher  15 hours 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  18 hours back

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

                                          • Professor Youtube
                                            Professor Youtube  1 days back

                                            Memory cells when disease strikes: *VIETNAM FLASHBACKS*

                                            • Mason
                                              Mason  1 days back

                                              Thank you

                                              • Alluro
                                                Alluro  1 days back

                                                8.1k dislikes are from karens

                                                • Corey Playz
                                                  Corey Playz  14 hours back

                                                  @Omer Feldman Yofiël A much reapeated joke. Can we enable captcha for no reason?

                                                • Omer Feldman Yofiël
                                                  Omer Feldman Yofiël  18 hours back

                                                  A much repeated comment. Can youtube enable Captcha for click farms?

                                              • Mr Nomu
                                                Mr Nomu  1 days back

                                                If you don't take vaccines your son won't take a risk! Because, corpses do take risks?

                                                • Mr Nomu
                                                  Mr Nomu  2 hours back

                                                  @imperium 107 It's ok

                                                • imperium 107
                                                  imperium 107  4 hours back

                                                  @Mr Nomu ah ok, I'm sorry

                                                • Mr Nomu
                                                  Mr Nomu  18 hours back

                                                  @imperium 107 Sorry for my bad grammar, I'm Spanish, and I don't really speak fluent English

                                                • imperium 107
                                                  imperium 107  21 hours back

                                                  Mr nomu, I knew exposing your brain was a bad idea, it would apear some dirt got in your brain and damaged your ability to make a proper sentence

                                              • Adrian TheYeetedOne
                                                Adrian TheYeetedOne  1 days back

                                                To all anti vaxxers:

                                                Let’s say you get sick and survive, that does not mean vaccines aren’t needed, that’s like saying you get shot and survive, that doesn’t mean you don’t need body armor, you need vaccines!
                                                Vaccines could have prevented that sickness, yet you’d rather read one article from buzzfeed, one of the fakest news websites ever, and plus where is your proof? You read a piece of fucking paper? Exactly now go to your son dying of the small pox, so you could tell him that the people with vaccines that prevent them from fucking dying gave you this, see you at the funeral bitch.

                                                • Corey Playz
                                                  Corey Playz  14 hours back

                                                  @Omer Feldman Yofiël 1981, WHO announced that smallpox was eradicated, after a global vaccination campaign. HMMMMMM...

                                                • Omer Feldman Yofiël
                                                  Omer Feldman Yofiël  18 hours back

                                                  They don't vaccinate for smallpox.... But I'd like to see you post the mortality table for it. I hazard a guess that, just like measles, mumps, and rubella, it was approaching zero in the USA in 50s.

                                              • Abdullah Tanis
                                                Abdullah Tanis  1 days back

                                                Who’s dumber?

                                                Flat earther or anti vax mom?

                                                • Corey Playz
                                                  Corey Playz  14 hours back

                                                  Anti-Vaxxers, because Flat-Earthers are stupid, but not harming children

                                                • Abdullah Tanis
                                                  Abdullah Tanis  16 hours back

                                                  Yeah that is true
                                                  No one since the time of Pythagoras in 50 bc no educated person believed the earth was flat
                                                  Then again your right a anti vax person can kill someone
                                                  stupidicus idioticus
                                                  That is their new name

                                                • Frankodanko
                                                  Frankodanko  19 hours back

                                                  Anti vaxxers can actually kill someone

                                                • Random Animations
                                                  Random Animations  23 hours back

                                                  Abdullah Tanis lets look at their brains!
                                                  Oh 0 IQ both!
                                                  Both small brain
                                                  Both no brain

                                              • Miguel Rodríguez
                                                Miguel Rodríguez  1 days back

                                                Antivaxxers: **exists**
                                                Bacteria and Viruses: It's free real estate...

                                                • a asf
                                                  a asf  1 days back

                                                  Twas a good video but tis a shame they did not address the exposure to mercury that one faces when receiving a vaccine.

                                                  • a asf
                                                    a asf  3 hours back

                                                    @Corey Playz Not true, & also not true. I looked into it last night. Vaccines today in the U.S. at least, STILL contain mercury. Look it up. They're working on trying to phase it out.

                                                    although one atom of mercury will not kill you I'm pretty sure there is more than one atom of Mercury. it's likely thousands if not hundreds of thousands of atoms of mercury I don't know that's besides the point.

                                                    A few hours ago I stated that after looking into it again, it appears that the Mercury passes through your body *probably* NOT getting absorbed into your body, according to what I read. in my initial post I wasn't concerned it would kill you; I didn't think that would be the case *obviously*, but like I said before, *ANY* amount of mercury introduced into the body is not good. the body can't get rid of it on its own and it tends to stay there for a while causing damage the entire time.

                                                  • Blu Laza
                                                    Blu Laza  12 hours back

                                                    a asf gettim boys

                                                  • Corey Playz
                                                    Corey Playz  14 hours back

                                                    @a asf Uh... No. Take water, the average person will die if you drink a few gallons. One atom of mercury will kill you? Bullshit. Vaccines don’t even contain mercury now!

                                                  • a asf
                                                    a asf  16 hours back

                                                    Ok so apparently the measles vaccine doesn't even contain THIMEROSAL (aka ethylmercury) and their trying to replace it with another perservative. The state of California has banned any vaccines that contain THIMEROSAL. Most influenza vaccines will still probably have it.

                                                    Apparently everything I read indicates that any exposure to ethylmercury from a vaccine is negligible. Unfortunately all of the data I read came from either the CDC, FDA, and/or the New England Journal of medicine. We already know the FDA is so corrupt it's essentially worthless but with the amount of money & influence Big Pharma has these days I am a little leary of getting info from those organizations having to do in any way with the pharmaceutical companies or their products. The sources did however cite claims from various other countries around the world that coincided with their findings that ethylmercury is excreted/passed so quickly through the body that little too no damage would arise from the minute amount of THIMEROSAL that is in *some* vaccines.

                                                    Also a few years back some of the concern brought under fire regarding THIMEROSAL was based on evidence (incorrectly) from METHYLmercury & was not for ethylmercury.

                                                • Bai Dash
                                                  Bai Dash  1 days back

                                                  Wow. Just wow ! Your videos are just fantastic. Keep it up!!

                                                  • Meme Lord
                                                    Meme Lord  2 hours back

                                                    @Omer Feldman Yofiël dafuq?

                                                  • Omer Feldman Yofiël
                                                    Omer Feldman Yofiël  18 hours back

                                                    Nothing like pharmaceutical industry funding to make great advertising campaigns.

                                                • Abdullah Tanis
                                                  Abdullah Tanis  1 days back

                                                  So I’m pretty sure vaccines pretty much give your body a few cells of Teh disease but basically give them red flags telling the immune system that that is a virus
                                                  The next time another one comes not from vaccines the immune system will recognize it and be like NOPE UR DEAD before it can spread
                                                  Then again I never looked into so I wouldn’t be surprised if I was wrong
                                                  BTW I wrote this before watching the video

                                                  • imperium 107
                                                    imperium 107  21 hours back

                                                    Even shorter version
                                                    Doctor:hey cells see this?
                                                    Cells: yeah?
                                                    Doctor: next time you see it, *KILL*

                                                • DerpyTurtle Derps
                                                  DerpyTurtle Derps  1 days back

                                                  Kurzgesagt has helped me through school and alot of stuff by entertaining me.
                                                  So you best believe this channel I got A’s from watching his videos.

                                                  • AllesSchäbig
                                                    AllesSchäbig  1 days back

                                                    I've never been vaccinated. I am in my mid-twenties now and wondering about where I stand on the issue after never really caring that much. I am sceptical of vaccination because I've been FINE. I know that is not reason enough to dismiss vaccination, it's just what informs my scepticism - along with, as stated, apathy. One thing I've noticed in the comments is people mentioning either a) getting sick or b) not getting sick as some kind of proof for for either side of the debate. I have been sick: I've had chicken pox, measles, whooping cough, and mumps. But you know what, each one of those I got at a young age and... I was fine. I got sick for a couple of weeks then I got better. And yes I know that, if the data relayed in this short vid is more or less accurate, I ran a statistically less favourable gauntlet in being exposed to catching these things, than a peer of mine would have who was vaccinated; however, what I was always led to believe - and what I don't see coming up either in the video or in any comments I've read - is that in the long run it was better to get these sicknesses and basically strengthen my immune system. I was never fed scare stories about this or that as a child, it was simply: vaccinations hobble your body's natural defense system, and whilst they might immunise one against some diseases, they would on the whole weaken the inherant prowess of the body so that the risk of falling prey to diseases not vaccinated against was higher... yada yada yada.

                                                    Anyhow, has anyone got a good argument against this? As I haven't heard it. Like I say - not my choice, my parents'; so fuck off in advance if you're gonna be a dickhead. And yes, I know I'm a threat to the collective community by being one of the un-vaxed - but that also informs this question: is it not possible that the collective immunocompetency of the species could be higher if every - or a majority - of individuals simply had grade-A, untainted, fighting fit immune systems. I know that's a controversial question, but I feel it's worth considering.

                                                    If you wanna point me at some research and interesting arguments, great. If you're an opinionated keyboard warrior with no medical background who just wants to vent, do us all a favour and scream into a pillow instead, I swear it will do more good for the world.

                                                    • Corey Playz
                                                      Corey Playz  14 hours back

                                                      You’ve been fine because you don’t live in some third to second world nation (not dissing Vietnam or Cuba)

                                                    • AllesSchäbig
                                                      AllesSchäbig  14 hours back

                                                      Justin Wolter that’s really interesting. Thanks.

                                                    • AllesSchäbig
                                                      AllesSchäbig  14 hours back

                                                      Omer Feldman Yofiël will do!

                                                    • Omer Feldman Yofiël
                                                      Omer Feldman Yofiël  17 hours back

                                                      Watch Vaxxed, the documentary about the Cdc whistle blower. They bring a powerful case that the Cdc was bought and paid for by pharmaceutical money, and doctored the results of their own study linking MMR and autism.

                                                  • Giang Đức
                                                    Giang Đức  2 days back

                                                    What a awesome animation, thanks for producing.

                                                    • Meme Lord
                                                      Meme Lord  2 hours back

                                                      @Omer Feldman Yofiël except this is honest information

                                                    • Omer Feldman Yofiël
                                                      Omer Feldman Yofiël  17 hours back

                                                      Awesome animation should not be a substitute for honest information.

                                                  • 亚瑟神
                                                    亚瑟神  2 days back

                                                    what if those bacteria Immunology

                                                    • 亚瑟神
                                                      亚瑟神  13 hours back

                                                      @Corey Playz thanks!alot!

                                                    • Corey Playz
                                                      Corey Playz  14 hours back

                                                      He/she’s Chinese. She doesn’t know English well. Also, they can’t become IMMUNE, because it uses a trick to make the body produce antibodies to nuke the bacteria.

                                                    • Super Mega
                                                      Super Mega  22 hours back

                                                      bacteria cannot become immune to vaccines

                                                    • lolbox1
                                                      lolbox1  1 days back

                                                      亚瑟神 what?

                                                  • SLHP productions
                                                    SLHP productions  2 days back

                                                    Preaching to the choir....