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 • 65 524

  • 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.

    • frick ajit pai
      frick ajit pai  17 hours back

      Kurzgesagt – In a Nutshell epic

    • joel marin
      joel marin  17 hours back

      thank you for making this video, its been a great help for my social justice project. I hope to use this as a source to help write my letter to a politician, (who is undecided as of writing this), I really hope to make a change and to make vaccinations more mandatory in the united states!

    • Jarley
      Jarley  1 weeks back

      Kurzgesagt – In a Nutshell you forgot one thing that vaccines cause:

      adult hood
      I don’t want that happening to my children

    • GodmanBG
      GodmanBG  1 weeks back

      It would be nice if you had touched upon, or at least mentioned that we vaccinate against a multitude of other diseases besides measles.

  • Or3o Nightcore
    Or3o Nightcore  38 minutes back

    shit i took my second vaccine shot today o.O

    • Nicholas Leclerc
      Nicholas Leclerc  44 minutes back

      You should’ve honestly put a Super Sayian silhouette with a big red X sign on it; because you’re basically saying that Zenkai boosts don’t exist in humans without the immunity system

      • Hummus Sapien7.6Billion

        everyone who down voted is an anti-vaxxer

        • Darth Games
          Darth Games  2 hours back

          Fun Fact (or just Fact idk): Earth #199999 is the number for the Earth on the MCU
          Since in Marvel,every Universe has it's own Earth and it's number

          • Freddy 2.o
            Freddy 2.o  2 hours back

            The people who disliked this video are either antivaxers or people who just saw the thumbnail

            • クラリス
              クラリス  3 hours back

              G T A

              • Gregor Coetzee
                Gregor Coetzee  3 hours back

                The War of Cells: Comming this Summer

                • Aqua 458
                  Aqua 458  3 hours back

                  Where my anti-vaxxers at!?

                  Oh wait there in the grave

                  • Finix
                    Finix  4 hours back

                    Vaccines are medicines, and as all medicines, there is a need to consider children by case. In Italy they do not do that. We have more than 10 mandatory vaccines, and some of them are done together (3 vaccines at the same time), and this is dangerous. Who does say so? The books of medicine! They say something but they do the opposite.

                    • Vary Olla
                      Vary Olla  3 hours back

                      No = it's not.  From the very moment an infant is born = it is exposed to a myriad of microorganisms.  You have right now a host of bacteria, viruses, and fungi living inside you and which wage a continual war against yourself and each other. 

                      So not all vaccines are the same as some contain entire weakened pathogens - while others only contain pieces of a pathogen or else the toxin it produces.  A piece of something - let along a toxin - can not replicate and thus it is impossible to infect the individual with the condition.  Meanwhile the employment of attenuated pathogens is tolerated by almost everyone.  We can sometimes see - albeit very rarely - a few who owing to some idiopathic issue with their immune system they have trouble destroying the weakened virus. 

                      So a person who can not even tolerate exposure to a weakened virus = will in all likelihood react similarly - or worse - upon exposure to the full-strength "wild" version of the same.  If you want to critique vaccine employment you'd better look at the entire picture and get your facts straight first.  Have a nice day.

                  • Gannicus
                    Gannicus  4 hours back

                    people are concerned that if vaccines were mandated by the government, that opens the precedent that your personal health care is no longer private, meaning that opens pandora's box for forced abortions, or something more realistic like micro-chipping citizens. The liability of the government for a bad batch of vaccines, or the fact the government could maliciously alter a vaccine after they are mandated is a privacy and health concern. Vaccines are good, but they shouldn't be mandated.

                    • Bill Kerman
                      Bill Kerman  4 hours back

                      I got sick after my flu vaccine

                      • The Elite Pickle
                        The Elite Pickle  2 hours back

                        But not nearly as sick as you would have if you had gotten the flu

                    • Válter Venâncio
                      Válter Venâncio  4 hours back

                      Now we need a video on Cholesterol, please!!

                      • Delkarix
                        Delkarix  5 hours back

                        Anti-vaccination is a problem that will literally solve itself.

                        • HeyItsHarlys
                          HeyItsHarlys  5 hours back

                          I am an anti-vaxx mother of 2 and my kids will still never get vaccines

                          • HeyItsHarlys
                            HeyItsHarlys  2 hours back

                            +The Elite Pickle Take a lookie at my channel and thoust will tell I'm not a womam or a mother

                          • The Elite Pickle
                            The Elite Pickle  2 hours back

                            HeyItsHarlys that wasn’t a joke. It wasn’t sarcastic in any way or obviously a joke.

                          • HeyItsHarlys
                            HeyItsHarlys  4 hours back

                            +NOB ODY_ i forgot i can't make jokes on yt comments rip

                            But that sounds about right

                          • NOB ODY_
                            NOB ODY_  5 hours back

                            It's gonna be one kid soon.

                        • Martial Kintu
                          Martial Kintu  6 hours back

                          Tell them about the aluminium, the mercury and etc.

                          • Martial Kintu
                            Martial Kintu  4 hours back

                            +eeeaten The mercury in the fish is all due to environmental destruction. Didn't really know about aluminium in orange juice but now thank know I should just stop buying it.

                          • eeeaten
                            eeeaten  6 hours back

                            Martial Kintu sure, tell us about the aluminium in orange juice and the mercury in fish.

                        • deity_games
                          deity_games  7 hours back

                          Just got my abi-thema, I have to discuss wether a mandatory vaccination is righteous or not. But more in a philosophical way, because its a philosophy presentation^^

                          • Ravi Jyot
                            Ravi Jyot  7 hours back

                            I have never been vaccinated is it to let for me or is everything normal.

                            • Ravi Jyot
                              Ravi Jyot  2 hours back

                              +eeeaten not at all

                            • eeeaten
                              eeeaten  6 hours back

                              Ravi Jyot have you had measles?

                          • Arpit Solanki
                            Arpit Solanki  8 hours back

                            mom : I am not going to vaccinate my child you heathens.
                            measles and other diseases : It’s free real estate .

                            • Altay Badirov
                              Altay Badirov  9 hours back

                              What about the other vaccines? Not all the vaccines are the same.

                              • NOB ODY_
                                NOB ODY_  5 hours back

                                All of them.

                              • eeeaten
                                eeeaten  6 hours back

                                Altay Badirov they all cause way less harm than the diseases they prevent.

                            • Yonakuni
                              Yonakuni  9 hours back

                              lol Funny thing about these Anti-vaxxers is that they mostly DON'T exist in the eastern hemisphere. This issue is sooo unique to the western hemisphere.

                              We Asians don't question vaccines because to us, they keep our kids alive longer than those who didn't get the shots; more than enough to convince us. We'd rather save a million babies than let a million die.

                              Point being: this is a stupid argument from the west; to the point where we don't even talk about it here on the east because it is a given. We get our kids vaccinated, they live longer. End of discussion.

                              • Yonakuni
                                Yonakuni  8 hours back

                                +Fresh Pixelated Memes IKR? Think of all those kids at risk just because someone did research that vaccines cause AuTiSm so DON'T vaccinate your children.

                                Damn, if they are so smart (and if it does cause AuTiSm), why not just make a better vaccine than TELL DA WHOLE WORLD NOT TO VACCINATE THEIR CHILD.

                                lol sometimes, the simplest of questions cannot be answered by any genius.

                              • Fresh Pixelated Memes
                                Fresh Pixelated Memes  8 hours back

                                What really pisses me off is how there are people in developed nations that have access to this kind of medical technology and they're just dismissing it because of mere superstition.

                                I guess the saying "One man's trash is another man's treasure" really is applicable here.

                            • Crusader Carl
                              Crusader Carl  10 hours back

                              Anti vax 10 year challenge
                              *404 image not found*

                              • Stunder0319
                                Stunder0319  10 hours back

                                6:30 just a question,did it just inject that...into a...

                                • Depressed items for sale
                                  Depressed items for sale  10 hours back

                                  There's this one awful side effect of vaccination that kills you in about 70-80 years.

                                  • Jasper Beekman
                                    Jasper Beekman  11 hours back

                                    That moment u realize this is basicly a real form of homeopathy

                                    • dhuyd
                                      dhuyd  11 hours back

                                      The real disease is corporate interests & transparency. The Vaccine industry can be weaponized like a youtube algorithm. Who is the real demographic with your smartphones? The ad agencies. What's the product? Your data. Who is the fuel? The public. Now while different industries leverage different market pressure points, it's healthy to play devil's advocate.. or rather the relationship between content & context is key

                                      • xxhalogamer22xx
                                        xxhalogamer22xx  12 hours back

                                        This is Anti-Vaxxer logic:
                                        I don't feed my children because eating can cause choking. Sure there are some good results of eating such as that so called "prevents starvation" nonsense. There are starving people everywhere in the world and they've survived. I have choked on food before and did some research and guess what? Thousands of people choked on food each year. What I'm saying is that the government has no right to tell me what to do with MY children. Food is deadly and I will stand by my reasonings!

                                        • Fresh Pixelated Memes
                                          Fresh Pixelated Memes  12 hours back

                                          Too much water will cause you to drown so that's 100% dangerous, right?

                                      • Jaye Potato
                                        Jaye Potato  12 hours back

                                        Hey anti-vaxxers, discuss the dangers of vaccines here!

                                        • Jaye Potato
                                          Jaye Potato  12 hours back

                                          Just kidding, you trash people. Vaccines DO NOT cause autism. In fact, autism isn't bad. I have autism, and I know that nothing is wrong with it.

                                          2, You barely even SAW proof of vaccines being bad, so shut up and check someplace else on the web, where there's proof of pro-vaxxers (people like me) being true.

                                          And finally, 3. You don't know how vaccines can do bad things to you.
                                          Nobody wants to believe you, anti-vaxxers, but you say false truths and you try your best to get people to join you. YOU'RE NOT A GOOD PERSON. (And fellow Pro-vaxxers, if you're reading this, sorry for the aggressiveness.) Leave a like to save humanity from vaccines like measles. Thank you for reading this, and GET YOUR OPINIONS RIGHT.😬

                                      • The Boat
                                        The Boat  12 hours back

                                        guess who just got owned while searching the internet for a cause of autisim?

                                        *karen, but its obvious by now*

                                        • ChicoCuantico
                                          ChicoCuantico  13 hours back

                                          Nadie ha muerto nunca como consecuencia de un medicamento.

                                          Fin del debate.

                                          • ErikLew
                                            ErikLew  13 hours back

                                            Inti vax moms be like...

                                            • demonitized
                                              demonitized  13 hours back

                                              Anti vaxxer: vaxines cause autism

                                              Anti vax child: if only I would have lived long enough to find out

                                              • Zoltán Halassy
                                                Zoltán Halassy  14 hours back

                                                1:18 "Contrary to popular wisdom, what doesn't kill you doesn't make you stronger."
                                                1:28 "our immune system came up with an ingenious way to get stronger and stronger over time."
                                                1:38 "our immune system automatically creates memory cells."
                                                1:59 "many infections you beat once will never make you sick again."

                                                The "what doesn't kill you makes you stronger" means exactly that. 1. experience, 2. remember, 3. act accordingly next time.

                                                • Darkira Knight
                                                  Darkira Knight  10 hours back

                                                  +Zoltán Halassy Yup, being able to survive doesn't mean you're stronger now, but you still have chance to be stronger, because you're not dead.

                                                • Zoltán Halassy
                                                  Zoltán Halassy  11 hours back

                                                  +Darkira Knight Sure, this "strength" what the popular wisdom is about is not a single-dimensional property (for example what you've just said, having immunity of a type doesn't mean we have protection in the other), and these wisdoms shouldn't be taken literally (and with a grain of salt). And I think being able to adapt is a kind of strength though, and these memory cells give that strength (in one dimension). The wisdom doesn't say the strength comes immediately (there is a "tired and damaged" phase), but if we survive that phase, then we got stronger: the same infection will not cause that "tired and damaged" phase anymore.

                                                • Darkira Knight
                                                  Darkira Knight  12 hours back

                                                  We adapt and being stronger is different.... Yup you're immune to the virus, but doesn't mean a less dangerous virus can't make you sick. Well cause you take the contexts, in the video. It explaining that when we sick and recover our immune system is "tired and damage". So to overcome it we have a memory cells.

                                              • Fernando Carballo
                                                Fernando Carballo  14 hours back

                                                Let natural selection take its place and kill those who disliked🤗

                                                • you know i had to do it to em

                                                  lmao the only ppl with autism is the antivaxxers

                                                  • Lupi Fedora
                                                    Lupi Fedora  14 hours back

                                                    I'm so glad someone finally set things straight, EAT THAT KAREN!

                                                    • Banana aiming for 10,000 subs

                                                      Anti-vaxx children: I wanna be a doctor when I grow up
                                                      Measles: LMAO ROTFL

                                                      • Karthik Venkata
                                                        Karthik Venkata  14 hours back


                                                        • Nick Brandon
                                                          Nick Brandon  14 hours back

                                                          KURZGESAGT SAID FACTS DONT CARE ABOUT YOUR FEELINGS

                                                          KURZGESAGT SAID FACTS DONT CARE ABOUT YOUR FEELINGS

                                                          B A S E D

                                                          • Fidel Castro
                                                            Fidel Castro  14 hours back

                                                            Baited Anti vaxxers into knowledge

                                                            • Ryan Hoover
                                                              Ryan Hoover  14 hours back

                                                              that moment when you check the comments
                                                              for anti-vax moms and there is no one

                                                              me: I know those fuckers are up to something

                                                              • TB Insanity
                                                                TB Insanity  15 hours back

                                                                Well vaccines have the element mercury in them so it like drinking liquid lead 😮

                                                                • Is that a custom avatar 1
                                                                  Is that a custom avatar 1  5 hours back

                                                                  TB Insanity drinking water is like drinking hydrogen and oxygen which is explosive so we’re technically organic bombs


                                                                • C1ubp3ngu1n G0d69
                                                                  C1ubp3ngu1n G0d69  10 hours back

                                                                  TB Insanity can I borrow your time machine?

                                                                • eeeaten
                                                                  eeeaten  12 hours back

                                                                  TB Insanity apples have arsenic in them so it like drinking liquid cyanide XD

                                                                • Tautologist
                                                                  Tautologist  13 hours back

                                                                  They don't have elemental mercury in them and they never did. They used to have an organomercury compound called thimerosal in them, but it has been taken out even though there was no real evidence it was harmful at all. Btw, hilarious comparison with the "liquid lead" thing. Liquid lead exists at temperatures greater than 621 degrees F lol. That's a lot spicier than mercury.

                                                                • Sophie Waterman Hines
                                                                  Sophie Waterman Hines  14 hours back

                                                                  TB Insanity How much mercury do they have in them? How much does the average human ingest in a day? They’ve virtually stopped using mercury in vaccines too, but even if they still did, it wouldn’t be enough to do anything.

                                                              • Dragon razor
                                                                Dragon razor  15 hours back

                                                                ._. as long as a virus doesn't evolve to a new level(like bird flu) were good

                                                                • Backpack Boi
                                                                  Backpack Boi  16 hours back

                                                                  I'm happy to say, *Kids dying because of stupid parents* is a great way for anti-vaxxers to realize vaccine is good. Plus less kids. May I remind you this Is the generation of fortnite?

                                                                • shane10150
                                                                  shane10150  16 hours back

                                                                  Vacicines cause aliveness

                                                                  • Kougz
                                                                    Kougz  16 hours back

                                                                    Ok but now I want a video game that is a human body immune system simulator with chibbi cells and level of threats of the diseases and you start with a baby with randomly generated allergic reactions and you have to make its immune system grow stronger as they age. FUND IT !!

                                                                    • xbox _clan123
                                                                      xbox _clan123  17 hours back


                                                                      • peace meal
                                                                        peace meal  17 hours back

                                                                        What a wonderful video! Thanks so much