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 • 76 046

  • 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.

    • Nick Korkodylas
      Nick Korkodylas  20 hours back

      I am constantly being called an "anti-vaxxer" and a "science denialist" just for pointing out that it's a bad idea to allow governments make sticking needles in your children mandatory. They also called me a "conspiracy theorist" for pointing out that some vaccines used mercury compounds as preservatives.

    • Jordan Sutche
      Jordan Sutche  3 days back

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

    • Haziq Aiman
      Haziq Aiman  3 days back

      Ok gus

    • A random Weeb
      A random Weeb  1 weeks back

      500 comments boiiiiiiiiiiiiiiiiii.

  • Alexander DiRaddo
    Alexander DiRaddo  31 minutes back

    *unfunny and overused antivaxxer joke*

    • JOY & PAIN
      JOY & PAIN  2 hours back

      From personal experience I can say that certain vaccines aren't for everyones genetic makeup and from what I experienced after the FLU shot was severe joint stiffness and fevers around 104 for no reason and couldnt move my arm so I no longer get the flu shot with MMR which is what they say,causes autism Its a huge confusion I understand its not that vaccines are bad its that certain,humans mitochondria cant withstand the chemicals all at once and as a result they have autistic characteristics or brain issues neurodevelopment etc but,kids who can sustain it have no issue .The debate about protecting society from viruses I understand it but do feel they should study each person's genetic makeup to ensure they are,candidates forthese vaccines and if not make certain ones for,people who may have a certain gene that will cause harm if they receive vaccines its all in DNA genes and Blood type at the,end of the day one shot cant be for everyone

      • nowsoh
        nowsoh  2 hours back

        I can’t believe there are such things as antivaccant people that exist ...
        Chances are 100% of people watching this video has been vaccinated and are living happily

        • skoorb nimajnib
          skoorb nimajnib  4 hours back

          So in the past they poisoned us with dangerous mercury and more aluminium? So you have admitted their guilt. They are still poisoning us. Even more. Or is it just that they stay one step ahead of popular scientific knowledge. Should we trust Big Pharma and it's links to the Nazis etc. Read the book Bad Pharma. Who pays to produce these cartoons? Yes - there are bad and crazy people in power at the highest levels who instead of toothbrush moustaches have cultural ways to indoctrinate. Listen to experts, because simplified explanation can be deceiving.
          Mercury and aluminium, and things like flouride, which is also a known brain toxin which is in our daily water (first added in the concentration camps to make the prisoners docile) and toothpaste have precursors...building blocks...
          chemicals which contribute towards their formation. 1+1=2.
          We are talking also about about injecting new born babies with many, many weird things at the same time, including viruses or parts of viruses when their immune systems are not developed so again we are talking about the combined effect of these things. If the anti-vaccine lobby is not a dumb fashion then it's arguments are worth investigating. I am not scientist but there are many scientists on that side or at least with many serious issues to raise and if more were paid by the state or Big Pharma then there would be more. The burden of proof is on the person who wants to inject millions of why is it so often the sceptics who are having to justify their position? Because many simplly believe in authority. Be careful with that. The say nuclear power is safe but look what happened in Chernobyl or Fukushima. Science is good but as it is driven by finance and investors and maybe people who belong to an elite who want to reduce the population, we have to be more than happy shoppers.
          The issue about many african countries going to court over masses of tetanus viruses containing sterilisation agents is common knowledge among well-informed people. So it depends what sources are official.
          But then again, ask your doctor about cancer?
          It is now becoming clear that Cancer is often triggered by "harmless" viruses....and one day it will be common sense will catch up and say that it is logical. Meanwhile people are dying and the cancer industry is lagging behind the facts. Perhaps because if people can help prevent cancer by common anti-virals such as cat's claw and raw garlic then why do doctors never prescribe natural preventative medicine to their patients?
          Why do schools not provide a few pieces of fruit free for every child?

          • Quartermaster 40k
            Quartermaster 40k  4 hours back

            I swear when we colonize the moon and Mars and if I have the power to choose those going I'll mkae sure no antivaxxer comes to the ships. Their stupidity and ignorance will be our downfall

            • Dialas Dialga
              Dialas Dialga  4 hours back

              I was here to roast antivaxxers in the comments, but I found intellectuals

              • Gacha Bob
                Gacha Bob  5 hours back

                Me:mom did you vaccinate me !!!!!?

                • Sir Admin
                  Sir Admin  5 hours back

                  If you have a antivax friend with a kid when your kid gets vaccinated host a party for the kids the antivax kid will get sick and die 😂😂😂😂😂😂😂😂

                  • Gabriel Jordan
                    Gabriel Jordan  8 hours back

                    Vaccines do NOT cause autism.

                    • Umgrut
                      Umgrut  9 hours back

                      Autism causes vaccines!!!

                      • Haziq Aiman
                        Haziq Aiman  9 hours back

                        3 virus 🏳️‍🌈

                        • Joat Zarathustra
                          Joat Zarathustra  10 hours back

                          I refuse to use antivirus software I don’t want an autistic computer!

                          • ThE BiNdiNg iS fRaGiLe
                            ThE BiNdiNg iS fRaGiLe  11 hours back

                            I like how as the video progressed they started to roast the anti vaxxers yarder and harder savage.
                            And awesome video.

                            • janevski
                              janevski  11 hours back

                              Who's watching this after getting vaccinated?

                              • Daddy Long Legs
                                Daddy Long Legs  12 hours back

                                Wanna roast an anti-vaxxer in the comments can someone just take one for the team and pretend they anti-vax so we can all laugh at them pls

                                • ThE BiNdiNg iS fRaGiLe
                                  ThE BiNdiNg iS fRaGiLe  11 hours back

                                  You moron dont you know every person on earth who has taken vaccine yet has died pr is on a verge to death how can you compare something which has 100 percent death rates to the small proportion caused due to no vaxxx

                              • SQUACK
                                SQUACK  14 hours back

                                pharmaceutical companies should have to test vaccines as a drug and should not be immune to lawsuits for childhood vaccines

                                • Dialas Dialga
                                  Dialas Dialga  4 hours back

                                  @SQUACK also fuck off

                                • Dialas Dialga
                                  Dialas Dialga  4 hours back

                                  Hell nah they do already, is earth flat to you?!

                                • Noob_Frvr 676
                                  Noob_Frvr 676  7 hours back

                                  Ok so, do you believe the earth is flat or something?, theres inumerous proofs that this is real but you Don't believe,but it's good for ou society if your kind of people got "erradicated"we need safety, it's just like the people who don't believe in global warming
                                  (I'm a Brazilian, my english is not that good)

                                • SQUACK
                                  SQUACK  7 hours back

                                  @Noob_Frvr 676 Please do some real research before believing this video. We are destroying our children. A baby is designed to have no inflammation the 1st year of life. The baby is developing it's immune system and the mothers breast milk is providing immunity. We proceed in the USA to give the precious unformed immune system of an infant 24 doses of vaccines the first year of life in fact we give the hepatitis B vaccine the 1st day of life which has 10 times the recommended amount of aluminum according to the weight and the FDA guidelines. Aluminum creates an antibody response which creates inflammation in the 1st day of life. The USA has the highest infant mortality in the developed world right now. We are three times Japan which gives no vaccines the 1st year of life. Maybe our CDC FDA and HHS are being bought off by big money. Pharma, Government agencies, media and politicians are all in bed. Good luck getting any real science.

                                • Noob_Frvr 676
                                  Noob_Frvr 676  9 hours back

                                  The entire video explains how it's safe and you come here?

                              • SQUACK
                                SQUACK  14 hours back

                                This video is full of misinformation

                                • Toast
                                  Toast  6 hours back

                                  How would you know

                              • SQUACK
                                SQUACK  14 hours back

                                In the USA before the measles vaccine 1 in 500,000 Americans died per year

                              • SQUACK
                                SQUACK  14 hours back

                                Vaccines destroy our health and help big pharma make more money

                                • ThE BiNdiNg iS fRaGiLe
                                  ThE BiNdiNg iS fRaGiLe  11 hours back

                                  I know right i know almost 2000 people in my life probably more and every one who has taken vaccing is going to die mannn why do they take vaccines they have 100% death rate

                              • SubscribeToPewdiepie
                                SubscribeToPewdiepie  14 hours back

                                8:30 a mother has just indirectly killed their child by putting them in danger

                                • just another account
                                  just another account  15 hours back

                                  If your kid dies from a vaccine, its probably better that way...

                                  • Mariah Hirsch
                                    Mariah Hirsch  15 hours back

                                    (⊙□⊙) sugar rush

                                    • Note Nopeti
                                      Note Nopeti  17 hours back

                                      Doctor : omae o wa mou shindeir
                                      Kids : Nani?

                                      • Mysterious Snowball
                                        Mysterious Snowball  18 hours back

                                        All the dislikes are antivaxxers

                                        • Modd
                                          Modd  18 hours back

                                          Stop Vaccinating. I'm running out of buyers for Infant sized coffins

                                          • yousef issa
                                            yousef issa  20 hours back

                                            Me: **closes phone for 2 seconds**

                                            YouTube: hey I'll give you two new ads because why not

                                            • Sum cringey boi
                                              Sum cringey boi  20 hours back

                                              Do vaccines cause autism?
                                              Kurzgesagt: "Well, yes but actually no."

                                              • Marco Gögele
                                                Marco Gögele  22 hours back

                                                Who else looking for Karens

                                                • Kysier
                                                  Kysier  23 hours back

                                                  I think the saddest part of the whole anti-vax b/s is they not only have no idea how vaccines work, they also lack even fundamental knowledge of what autism is. It's like 2 different schools of ignorance had a baby (that immediately died of measles).

                                                  • Gabriel Platter
                                                    Gabriel Platter  23 hours back

                                                    Birth also causes autism. We should stop birth to stop autism.

                                                  • Gulag Ticket
                                                    Gulag Ticket  23 hours back

                                                    It is simple thing:
                                                    Vaxxers: Soviet Union 1945
                                                    Bacterea: German Reich 1945
                                                    Antivaxxer Children:France 1939

                                                    • Rainbow the Dragon Cat

                                                      *Faith in humanity has dropped by 1%*

                                                      • Hello hello
                                                        Hello hello  1 days back

                                                        Ah yes.
                                                        Inslaved autism.

                                                        • Josh son ofZeus
                                                          Josh son ofZeus  1 days back

                                                          ohh, a bird cell

                                                          • Trần Thị Minh Châu Đàm

                                                            Memory cells: *Sees Flu virus*

                                                            Memory cells: *Has Vietnam Flashback*

                                                            Memory cells: FIREBASE ECHO, THIS IS SIERRA GOLF X-RAY REQUESTING IMMEDIATE ARTILLERY SUPPORT AT BRAVO-TANGO-2-1-5-4-6-3-3-7-9.

                                                          • אמנון נחשלים

                                                            I am glad that we have David Icke for unadulterated information.
                                                            Herd immunity=herd ignorance☹

                                                            • Xx RangoNLevi06 xX
                                                              Xx RangoNLevi06 xX  2 days back

                                                              Wait, if u beat cancer does that mean u can’t get it again?

                                                              • terrarian
                                                                terrarian  15 hours back

                                                                No. Sorry but cancer is a mutation in your cells making them multiply uncontrollably so you cannot be immune.

                                                              • Vary Olla
                                                                Vary Olla  1 days back

                                                                Partially correct Ashley.  You are correct in that cancer represents an idiopathic aberration with your cellular makeup rather than an external pathogen as with infectious diseases.  Yet your body periodically produces aberrant cells as a normal byproduct of the cellular mitosis which drives our bodies.

                                                                Your immune system will usually identify these defective cells and instruct them to commit "suicide" via apoptosis.  When that system breaks down however = we see tumors and cancer result.  So cancer represents a dysfunctional immune system and accordingly there is nothing to "learn".  All we can do is to try to destroy those aberrant cells externally via things like chemo or radiation and hope the immune system will kick in to do the rest. 

                                                                Moral of the story:  because it failed to do it's job to begin with = it can similarly fail again.  That is why we sometimes see reoccurrence after a time or else cancers affecting other systems.   Something is amiss with the body which it can not overcome = making it subjective to the individual alone.  We can prevent measles because it's cause is a single known virus.  Cancers on the other hand can be the result of multiple etiologies making them difficult to pin down.  Have a nice day.

                                                              • Ashley Gardner
                                                                Ashley Gardner  1 days back

                                                                Cancer is a little different. Cancer is a mutation from cells already inside your body so its nothing you contract. Your body may learn from previous cancer, but cancer cells are much harder to destroy

                                                            • Roy the big gey is not go no more gey

                                                              Births cause autism

                                                              • Lea Tompkins
                                                                Lea Tompkins  2 days back

                                                                To many antivaxxers dont realize how bad these diseases are. I've herd stories from my grandmother about kids with polio when she was young, and how scary it was you could be next in the hospital with an iron lung.

                                                                • Trần Thị Minh Châu Đàm

                                                                  Me, a coffin seller: *Sees an anti-vaxxer*

                                                                  Me: *STONKS* 📈

                                                                  • Nate Da Grate
                                                                    Nate Da Grate  2 days back

                                                                    I sorta am half in half out. I've been vaccinated but at the same time I havent been vaccinated in everything. Now please don't kill me, but I do believe that some vaccines are lethal and unnecessary. But vaccines that are necessary obviously are needed. So yea if u wanna get vaccinated just think if it's unnecessary or not

                                                                    • Danimeme
                                                                      Danimeme  2 days back

                                                                      Kurzgesagt puts its foot don at the end

                                                                      • Aji Pangestu
                                                                        Aji Pangestu  2 days back

                                                                        Come on leave the antivaxxers alone, they are very valuable to develop new deadly disease so we can reduce our number

                                                                        • 6969 subscribers with 0 videos challenge

                                                                          harmful bacteria: **enters the second time**
                                                                          also harmful bacteria: "why do i hear boss music?"

                                                                          • 6969 subscribers with 0 videos challenge

                                                                            8k dislikes are from anti vaxxers

                                                                            • Playeryboi
                                                                              Playeryboi  2 days back

                                                                              If you get sick over the weak cousin of measles then you’d probably die with the real measles parasite

                                                                              • Rubicon AU
                                                                                Rubicon AU  2 days back

                                                                                Honestly if I had money I would be buying so much merchandise and using Patreon.