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 • 75 644

  • 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

  • Viktor von DOOM
    Viktor von DOOM  55 minutes back

    Memory cells AKA memberberries

    • busygalaxy YT
      busygalaxy YT  2 hours back

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

      • Bloxy Red
        Bloxy Red  3 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  5 hours back

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

          • Romanu Fainosag
            Romanu Fainosag  8 hours back

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

            • Nicky Boi
              Nicky Boi  8 hours back

              Where are the balls

              • Not Just Another Homestuck

                Vaccines do not cause autism.

                *H A H*

                • Rochelle Villafuerte
                  Rochelle Villafuerte  9 hours back

                  Anti-vax people probably will feel dumb after this vid

                  • Jesus Christ
                    Jesus Christ  2 hours back

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

                • TheBegottenWarrior
                  TheBegottenWarrior  9 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  12 hours back

                      Karen’s must be dumbfounded and confused

                      • Diego Fernández
                        Diego Fernández  13 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  14 hours back

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

                          • Vary Olla
                            Vary Olla  3 hours back

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

                        • dFuZe_ SynlyLeo
                          dFuZe_ SynlyLeo  15 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  15 hours back

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

                            • Rainbow Shrimp
                              Rainbow Shrimp  7 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  15 hours back

                            KAREN WOULD LIKE TO SPEAK TO YOUR MANAGER

                            • Funpuns 08
                              Funpuns 08  16 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  20 hours back

                                Dangerous diarrhea

                                • TigerRod
                                  TigerRod  21 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  2 hours back

                                    TigerRod doesn’t actually work that way.

                                  • Malcolm Lynas
                                    Malcolm Lynas  15 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  22 hours 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  23 hours back

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

                                    • equintix
                                      equintix  24 hours 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

                                              • Cat
                                                Cat  36 minutes back

                                                Okay, thanks.

                                              • The Shinto Railfan
                                                The Shinto Railfan  13 hours back

                                                OK... what does that have to do with anything?

                                              • Dio-Chan!
                                                Dio-Chan!  24 hours back

                                                ok and what

                                            • 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  1 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  21 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  19 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

                                                              • Wut Wut
                                                                Wut Wut  2 days back

                                                                เลิกไหว้พระ เลิกทำบุญเอาตังซื้อสมาร์ทโหนขยายคว่ามรู้ดีกว่า

                                                                • The Shinto Railfan
                                                                  The Shinto Railfan  2 hours back

                                                                  English: How is this related to video?

                                                                • The Shinto Railfan
                                                                  The Shinto Railfan  2 hours back

                                                                  Sorry, @Level 100 Of Stupidity, but I don't have any other way of translating it.

                                                                • Level 100 Of Stupidity
                                                                  Level 100 Of Stupidity  2 hours back

                                                                  @The Shinto Railfan Google Translate is not reliable, he is speaking Thai which is my first language, the main comment said to stop praying to gods and use money to buy smartphones to spread/expand knowledge.

                                                                • The Shinto Railfan
                                                                  The Shinto Railfan  2 days back

                                                                  เอ่อ ... โอเค? ฉันไม่รู้ว่าจะทำอย่างไรกับวิดีโอ แต่ตกลง
                                                                  English: Uhhh... OK? I have no idea what that has anything to do with the video, but OK.

                                                                • The Shinto Railfan
                                                                  The Shinto Railfan  2 days back

                                                                  You said: Stop paying respect to gods, make merit, buy smart nodes, expand knowledge and know better

                                                              • Jacob Lutmer
                                                                Jacob Lutmer  2 days back

                                                                Me thinking this should stop antitvaxers that watch it me look 8 thousand dislikes welp there's my answer