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 • 75 648

  • 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  4 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

    • Get Pugger
      Get Pugger  1 months back

      Clint Ofray did your brain kill itself because it knew you were no hope

  • 亚瑟神
    亚瑟神  31 minutes back

    what if those bacteria Immunology

    • SLHP productions
      SLHP productions  2 hours back

      Preaching to the choir....

      • Viktor von DOOM
        Viktor von DOOM  3 hours back

        Memory cells AKA memberberries

        • busygalaxy YT
          busygalaxy YT  5 hours back

          Love him or hate him,
          His spitting straight facts about vax

          • Bloxy Red
            Bloxy Red  6 hours back

            3:14 i imagined it like this:
            Cell1: Yo did you see that game yesterday?
            Cell2: Yeah it's co-
            *vaccine bacteria flies around playing Solder of dance*
            Cell1: Oh no- *HRRRRRRR*

            • Seyyed Mohammad Ahmadi
              Seyyed Mohammad Ahmadi  8 hours back

              At 4:56 there's the SHIELD helicarrier and Stark Tower

              • Romanu Fainosag
                Romanu Fainosag  10 hours back

                This is the great filter...convincing dumb people vaccines save lives

                • Nicky Boi
                  Nicky Boi  11 hours back

                  Where are the balls

                  • Not Just Another Homestuck

                    Vaccines do not cause autism.

                    *H A H*

                    • Rochelle Villafuerte
                      Rochelle Villafuerte  11 hours back

                      Anti-vax people probably will feel dumb after this vid

                      • Jesus Christ
                        Jesus Christ  5 hours back

                        No. They will still think they're right because Karen on facebook told them!

                    • TheBegottenWarrior
                      TheBegottenWarrior  12 hours back

                      Anti-Vaxxers are the stupidest people ever.

                      • TheMinecraftSquid - Minecraft, ROBLOX Y Mas

                        i got vaccinated as a kid
                        i wanted to skip it but I got vaccinated

                        • Michu mochi
                          Michu mochi  14 hours back

                          Karen’s must be dumbfounded and confused

                          • Diego Fernández
                            Diego Fernández  16 hours back

                            Antivaxxer 40 year old soccer mom: *Sees the title*
                            Antivaxxer 40 year old soccer mom: I KNEW IT *scrolls away*

                            • Sunita Lekkala
                              Sunita Lekkala  16 hours back

                              In the vaccine effect part you didn’t say how many kids would contract measles

                              • Vary Olla
                                Vary Olla  5 hours back

                                Your post makes no sense.  You might want to rethink your question.  Have a nice day.

                            • dFuZe_ SynlyLeo
                              dFuZe_ SynlyLeo  17 hours back

                              B R E A T H I N G. C A U S E S. A U T I S M.

                              • dFuZe_ SynlyLeo
                                dFuZe_ SynlyLeo  17 hours back

                                I needed more then 20 shots of vac’s because PRIVATE reasons, and I’m not dead lol

                                • Rainbow Shrimp
                                  Rainbow Shrimp  9 hours back

                                  dFuZe_ SynlyLeo *I needed to get extra vaccines that I already had to live in the US, so that was cool*

                              • Omega Echo
                                Omega Echo  17 hours back

                                KAREN WOULD LIKE TO SPEAK TO YOUR MANAGER

                                • Funpuns 08
                                  Funpuns 08  19 hours back

                                  Kid: I wanna live for atleast 70

                                  Anti- Vaccine Mom: I’m about to end this man’s whole career

                                  • Sanic The Hotdog
                                    Sanic The Hotdog  23 hours back

                                    Dangerous diarrhea

                                    • TigerRod
                                      TigerRod  24 hours back

                                      You forgot the most serious side effect of vaccines. And YES. This is confirmed by studies. Vaccines DO increase the risk of this effect.

                                      It's called overpopulation, and it's only gotten worse since humans started developing vaccines.

                                      • eeeaten
                                        eeeaten  5 hours back

                                        TigerRod doesn’t actually work that way.

                                      • Malcolm Lynas
                                        Malcolm Lynas  18 hours back

                                        solution: let natural selection kill off the anti-vaxxers. population decreases, retarded people are gone. it’s a win-win

                                    • Elijah Ho
                                      Elijah Ho  1 days back

                                      Memory Cell: Knows how to fight previous infections
                                      Also Memory Cell: Is old and has Vietnam level flashbacks and PTSD

                                      • memey s
                                        memey s  1 days back

                                        Anti vaxxers were vaccinated cause they are past three but their brains have not grown

                                        • equintix
                                          equintix  1 days back

                                          Damn bro my cells are pretty cool, thats why i feed them chewed up food covered in saliva

                                          • Jeremy Smith
                                            Jeremy Smith  1 days back

                                            Bill Maher should watch this

                                            • FBI Agent
                                              FBI Agent  1 days back

                                              The side effects of vaccines are adulthood.

                                              • Happy Gamer
                                                Happy Gamer  1 days back

                                                8.1k anti vaxxers disliked

                                                • Cicidra Lisa
                                                  Cicidra Lisa  1 days back

                                                  I was born in 2011

                                                • Moo cruize
                                                  Moo cruize  1 days back

                                                  Ok so we found out that we have around 8 thousand anti vaxxers who watched this because we have about 8 thousand dislikes

                                                  • Saktiawan See
                                                    Saktiawan See  1 days back

                                                    To Kurgezast. Please made video about 'auto immune disease' 🙏🙏😊

                                                  • Its Fox
                                                    Its Fox  2 days back

                                                    I would never vaccinate my kids. It is reckless, harmful, and dangerous.
                                                    I take my kids to the doctor so they can vaccinate them instead.

                                                    • Luke Allen
                                                      Luke Allen  23 hours back

                                                      Its Fox they had us in the first half, I’m not gonna lie

                                                  • McBobbish
                                                    McBobbish  2 days back

                                                    Even if vaccines *did* cause autism? Still be fucking worth it.

                                                    • Krom Shom
                                                      Krom Shom  2 days back

                                                      s u r v i v a l

                                                      • The Bears
                                                        The Bears  2 days back

                                                        Actually 100% of vaccinated people die

                                                      • ConeGaming+
                                                        ConeGaming+  2 days back

                                                        Not being vaccinated is like starting life on hard mode.

                                                        • Random Animations
                                                          Random Animations  21 hours back

                                                          ConeGaming+ sorry
                                                          Your free life subscription is over

                                                      • Zelma Gaming
                                                        Zelma Gaming  2 days back

                                                        Natural selection. People raised to not use vaccines and aren’t vaccinated die and the people that aren’t brain-dead live.

                                                        • Elim Kwok
                                                          Elim Kwok  2 days back

                                                          Vaccines made me dead inside

                                                          • Elim Kwok
                                                            Elim Kwok  1 days back

                                                            @Francis I'm supposed to be just dead, but now I'm only dead inside

                                                          • Hi how are you
                                                            Hi how are you  2 days back

                                                            Dead inside alive outside

                                                          • Francis
                                                            Francis  2 days back


                                                        • ACringyReference
                                                          ACringyReference  2 days back

                                                          What kind of war zone is this comment section...?

                                                          • Vary Olla
                                                            Vary Olla  1 days back

                                                            If you refer to the video = look below it.  Science-oriented channels place sources and links in the drop-down menu below their videos.

                                                          • ACringyReference
                                                            ACringyReference  2 days back

                                                            I still want to see the sources of this people, just for shit and giggles you know?

                                                          • Vary Olla
                                                            Vary Olla  2 days back

                                                            Not much of one really.  lol!  When all we see are anti-vaccine proponents all parroting what amounts to the same pseudo-scientific and conspiracy theory claims they got from their "friends" in the echo chambers they create for themselves on social media then it requires little effort to expose and debunk such claims.  It is the intellectual equivalent of placating a restless child via some diversion = little brainpower involved.  Have a nice day.

                                                        • purple lights
                                                          purple lights  2 days back

                                                          My sis ha autisim

                                                        • Wszechświat
                                                          Wszechświat  2 days back

                                                          i'm glad my mom is pro-vaxx

                                                        • The bAcoOn K1nG
                                                          The bAcoOn K1nG  2 days back

                                                          What happens if we just injected memory cells of the disease from health people?

                                                          • Vary Olla
                                                            Vary Olla  2 days back

                                                            To add to what others have noted I would also point out the expense involved.  It would be considerably more expensive to either obtain such cells via blood draws and/or grow in a laboratory actual cells to administer to someone.  Meanwhile cells such as with when someone receives blood products etc. are usually given IV = even more invasive than a shot. 

                                                            So it is cheaper and easier to simply grow bacteria and viruses and separate out the parts we need or else to attenuate them for use in vaccines.  Huge amounts can easily be grown in some medium after which the parts we need are simply separated out and there is little fear of rejection.  Have a nice day.

                                                          • America January
                                                            America January  2 days back

                                                            They are genetically incompatible

                                                          • Corey Playz
                                                            Corey Playz  2 days back

                                                            Also, blood types,

                                                          • jonny abreu
                                                            jonny abreu  2 days back

                                                            I asume that Since they are not memory cells that our body created , our body would think those cells are viruses/bacterias and just try to kill then

                                                        • Bonyfax 234
                                                          Bonyfax 234  2 days back

                                                          One word:

                                                          • Star Silver
                                                            Star Silver  2 days back


                                                            Facts don’t care about your feelings

                                                            • Enayat Choudhury
                                                              Enayat Choudhury  2 days back

                                                              The most adorable animated kids I've ever seen. That scene with the child with encephalitis disturbed me...

                                                              • Jassem Salim
                                                                Jassem Salim  2 days back

                                                                So. The problem with vaccines is they are so good it makes overpopulation?

                                                                • Rajat Jadhav
                                                                  Rajat Jadhav  2 days back

                                                                  1:51 the memory cell gets PTSD

                                                                  • uzielperez2002
                                                                    uzielperez2002  2 days back

                                                                    I wish my mom was antivaxx bc I wanna d i e