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 • 75 730

  • 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

  • Some Pig
    Some Pig  9 minutes back


    • Kos or some say Kosm
      Kos or some say Kosm  2 hours back

      Child: (is unvaccinated)

      Diseases: It's free real estate

      • Montagne
        Montagne  4 hours back


        • Arttu Kettunen
          Arttu Kettunen  4 hours back

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

          • Biswatosh Purkayastha
            Biswatosh Purkayastha  5 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  5 hours back

              Nice and informative science

              • Mr jimjimjimmyjim
                Mr jimjimjimmyjim  5 hours back

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

                • Wes Lindsey
                  Wes Lindsey  7 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. 😈

                  • MrIndecisive
                    MrIndecisive  55 minutes back

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

                  • Axel Legaspi
                    Axel Legaspi  3 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

                  • Thecatlover 26
                    Thecatlover 26  4 hours back

                    Wes Lindsey listen I do agree but in this case some people can't be safe from deseases even with a vaccine so if others get it it will help them stay safe

                • Moha Jordan
                  Moha Jordan  9 hours back

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

                  • Walter Smith
                    Walter Smith  9 hours back

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

                    • MrIndecisive
                      MrIndecisive  55 minutes back

                      Jumping to conclusions like

                    • Axel Legaspi
                      Axel Legaspi  3 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  8 hours back

                      bruh you dumb

                  • LimitedSauce
                    LimitedSauce  10 hours back

                    Shouldnt countries just place anti-vaxxers on suicide watch?

                    • TheFrench Waffel
                      TheFrench Waffel  10 hours back

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

                      • Blooky the mememan.
                        Blooky the mememan.  12 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  12 hours back

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

                          • R D
                            R D  14 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  16 hours back

                              I KNEW VACCINES CAUSED AUTISM REEEEE.

                              • The lightning Rod
                                The lightning Rod  16 hours back

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

                                • Jackson Worthman
                                  Jackson Worthman  17 hours back

                                  The dislikes are from anti-vaxxing child murderers.

                                  • Haley Morrell
                                    Haley Morrell  18 hours back

                                    The main side effect of vaccines are crying children

                                  • Blu Laza
                                    Blu Laza  18 hours back

                                    Sort comments by newest first. Its wild.

                                    • Amar Mann
                                      Amar Mann  19 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  17 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  19 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  20 hours back

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

                                        • Omer Feldman Yofiël
                                          Omer Feldman Yofiël  22 hours back

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

                                          • MrIndecisive
                                            MrIndecisive  52 minutes back

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

                                          • Omer Feldman Yofiël
                                            Omer Feldman Yofiël  9 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  9 hours back

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

                                          • Omer Feldman Yofiël
                                            Omer Feldman Yofiël  9 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  9 hours back

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

                                        • Rage Mgr
                                          Rage Mgr  23 hours back

                                          Memory cell is wise.

                                        • Lil’saprel gaming
                                          Lil’saprel gaming  23 hours back

                                          Oh so your not an anti-vaxer

                                          • Meme Lord
                                            Meme Lord  8 hours back

                                            yeah watch the video before commmenting

                                        • Lil’saprel gaming
                                          Lil’saprel gaming  23 hours back

                                          Shut up anti-vaxer

                                          • Thecatlover 26
                                            Thecatlover 26  4 hours back

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

                                        • Haziq Aiman
                                          Haziq Aiman  1 days back

                                          There virus

                                        • 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  9 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  19 hours back

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

                                            • Omer Feldman Yofiël
                                              Omer Feldman Yofiël  24 hours 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  50 minutes back

                                                  Omer Feldman Yofiël 54700 died this year cuz of it.

                                                • Omer Feldman Yofiël
                                                  Omer Feldman Yofiël  9 hours back

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

                                                • Corey Playz
                                                  Corey Playz  17 hours back

                                                  Omer Feldman Yofiël The flu mutates every year...

                                                • Omer Feldman Yofiël
                                                  Omer Feldman Yofiël  24 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  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  8 hours back

                                                    i think your dad did that to calm you down

                                                  • B E A N O S
                                                    B E A N O S  18 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  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  19 hours back

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

                                                      • Omer Feldman Yofiël
                                                        Omer Feldman Yofiël  20 hours back

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

                                                      • Ryan Belcher
                                                        Ryan Belcher  21 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  23 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  19 hours back

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

                                                          • Omer Feldman Yofiël
                                                            Omer Feldman Yofiël  23 hours back

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

                                                        • Mr Nomu
                                                          Mr Nomu  2 days back

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

                                                          • Mr Nomu
                                                            Mr Nomu  7 hours back

                                                            @imperium 107 It's ok

                                                          • imperium 107
                                                            imperium 107  9 hours back

                                                            @Mr Nomu ah ok, I'm sorry

                                                          • Mr Nomu
                                                            Mr Nomu  24 hours back

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

                                                          • imperium 107
                                                            imperium 107  1 days 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  2 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  19 hours back

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

                                                          • Omer Feldman Yofiël
                                                            Omer Feldman Yofiël  23 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  2 days back

                                                          Who’s dumber?

                                                          Flat earther or anti vax mom?

                                                          • MrIndecisive
                                                            MrIndecisive  48 minutes back

                                                            Flat earthers aren’t killing children so your guess is as best as mine

                                                          • Corey Playz
                                                            Corey Playz  19 hours back

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

                                                          • Abdullah Tanis
                                                            Abdullah Tanis  22 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
                                                            THEY ARE BOTH EQUALLY STUPID SO STUPID IN FACT THAT THEY DESERVE TO BE A DIFFERENT SPECIES
                                                            stupidicus idioticus
                                                            That is their new name

                                                          • Frankodanko
                                                            Frankodanko  1 days back

                                                            Anti vaxxers can actually kill someone

                                                        • Miguel Rodríguez
                                                          Miguel Rodríguez  2 days back

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

                                                          • a asf
                                                            a asf  2 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  9 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  18 hours back

                                                              a asf gettim boys

                                                            • Corey Playz
                                                              Corey Playz  19 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  21 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.