The Side Effects of Vaccines - How High is the Risk?

  • Published on: 12 May 2019
  • Sources:

    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?

    This video has been supported by a grant from the Bill & Melinda Gates Foundation.

    If you are interested how much sponsorships influence our videos, we wrote about that in detail here:

    Support us on Patreon so we can make more videos (and get cool stuff in return):


    The Voice of Kurzgesagt:
    Steve Taylor:

    The music of the video here:

    THANKS A LOT TO OUR LOVELY PATRONS FOR SUPPORTING US:Marsha Sohn, Henri Holler, Michelle, Dan Crowley, Alex Hackman, Sammy Mikhael, Marcus Thorén, Kevin Harris, Jayami, Andreas Poletti, David Coates, Omar Galvis, Denny Zavada, Don Knowlton, Sebastian, Jay Ruthnam, Shakira Graham, MatBu, Mikhail, Sinan Taifour, Knowledge Unlimited, Odilia Krause, Anri Digholm, Dominykas, James Gaglio, Alice Jones, Narciso Jaramillo, Qaalid Hashi, Nate Bender, Gulyás Gergely, Michael Bloch, Rick Merced, Etienne Huguenot, Jonathan Lopez, Kai Smith, Benjamin Arndt, Philip Potvin, Amy Halter, Dylan polin, Zach Evans, Karan Chawla, Michael Casey, Francis Bouchard, William Gu, peck neck, Dien Buwono, Patrick Pruitt, Alexander Isayenko, Connor Doherty, Kierr Suñega, Kongpak Phupa, Lewis Foret, Daniel Ingegneri, David Saitta, Soeren Pollerhof, Ravi Shankar, Nico Kooyman, Anna Liceva, Dan Long, ADAM M., Cruz Godar, Pedro Caetano, Jean-Pierre Girard, Jonathan Piedrasanta, Jak SP, Jim Renney, Danielle Mitchell, Giorgio Valli, Ben Evans, Bill Cohen, Gitle Mikkelsen, Gemini00, Benjamin Mahoney, Christopher DiBattista, Mandy Reid, Gary Reckard, Sataporn Chaochonpun, Bigolf, Moses Malone, Kyle Merryman, Dante Bencivenga, Zeus Laser, Jake Wise, Jade, Fontaine Liu, Manav parmar, ethnicolor

    Help us caption & translate this video!
  • Runtime : 10:56
  • Vaccines Risk Side-effects Child Vaccinate Measles Virus Flu MMA Polio Pneumonia Encephalitis SSPE Genitalia Imflammation Memory Cell Rash Fever Immunsystem Infection Medicine Antibodies Allergic death Allergic Reaction Autism Healthcare Health vaccine public health herd immunity side effects illness sickness human funny


  • 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.

  • The Pink Slime
    The Pink Slime   30 minuts ago

    this is one of the single best videos I have ever watched.

  • error ninja101
    error ninja101   1 hours ago

    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

  • Jason Schwarzman
    Jason Schwarzman   1 hours ago

    I wish you guys would change the thumbnail... Seeing an adorable baby cry makes me upset

  • Ryan Belcher
    Ryan Belcher   3 hours ago

    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

  • Alluro
    Alluro   6 hours ago

    8.1k dislikes are from karens

  • Mr Nomu
    Mr Nomu   7 hours ago

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

  • Adrian TheYeetedOne
    Adrian TheYeetedOne   7 hours ago

    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.

  • Miguel Rodríguez
    Miguel Rodríguez   8 hours ago

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

  • a asf
    a asf   8 hours ago

    Twas a good video but tis a shame they did not address the exposure to mercury that one faces when receiving a vaccine.

  • Bai Dash
    Bai Dash   9 hours ago

    Wow. Just wow ! Your videos are just fantastic. Keep it up!!

  • Abdullah Tanis
    Abdullah Tanis   9 hours ago

    So I’m pretty sure vaccines pretty much give your body a few cells of Teh disease but basically give them red flags telling the immune system that that is a virusThe next time another one comes not from vaccines the immune system will recognize it and be like NOPE UR DEAD before it can spreadThen again I never looked into so I wouldn’t be surprised if I was wrongBTW I wrote this before watching the video

  • DerpyTurtle Derps
    DerpyTurtle Derps   10 hours ago

    Kurzgesagt has helped me through school and alot of stuff by entertaining me.So you best believe this channel I got A’s from watching his videos.

  • AllesSchäbig
    AllesSchäbig   10 hours ago

    I've never been vaccinated. I am in my mid-twenties now and wondering about where I stand on the issue after never really caring that much. I am sceptical of vaccination because I've been FINE. I know that is not reason enough to dismiss vaccination, it's just what informs my scepticism - along with, as stated, apathy. One thing I've noticed in the comments is people mentioning either a) getting sick or b) not getting sick as some kind of proof for for either side of the debate. I have been sick: I've had chicken pox, measles, whooping cough, and mumps. But you know what, each one of those I got at a young age and... I was fine. I got sick for a couple of weeks then I got better. And yes I know that, if the data relayed in this short vid is more or less accurate, I ran a statistically less favourable gauntlet in being exposed to catching these things, than a peer of mine would have who was vaccinated; however, what I was always led to believe - and what I don't see coming up either in the video or in any comments I've read - is that in the long run it was better to get these sicknesses and basically strengthen my immune system. I was never fed scare stories about this or that as a child, it was simply: vaccinations hobble your body's natural defense system, and whilst they might immunise one against some diseases, they would on the whole weaken the inherant prowess of the body so that the risk of falling prey to diseases not vaccinated against was higher... yada yada yada. Anyhow, has anyone got a good argument against this? As I haven't heard it. Like I say - not my choice, my parents'; so fuck off in advance if you're gonna be a dickhead. And yes, I know I'm a threat to the collective community by being one of the un-vaxed - but that also informs this question: is it not possible that the collective immunocompetency of the species could be higher if every - or a majority - of individuals simply had grade-A, untainted, fighting fit immune systems. I know that's a controversial question, but I feel it's worth considering. If you wanna point me at some research and interesting arguments, great. If you're an opinionated keyboard warrior with no medical background who just wants to vent, do us all a favour and scream into a pillow instead, I swear it will do more good for the world.

  • Giang Đức
    Giang Đức   12 hours ago

    What a awesome animation, thanks for producing.

  • 亚瑟神
    亚瑟神   13 hours ago

    what if those bacteria Immunology

  • busygalaxy YT
    busygalaxy YT   17 hours ago

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

  • Bloxy Red
    Bloxy Red   18 hours ago

    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 danceCell1: Oh no- HRRRRRRR

  • Romanu Fainosag
    Romanu Fainosag   23 hours ago

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

  • Michu mochi
    Michu mochi   1 days ago

    Karen’s must be dumbfounded and confused

  • Diego Fernández
    Diego Fernández   1 days ago

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

  • Sunita Lekkala
    Sunita Lekkala   1 days ago

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

  • dFuZe_ SynlyLeo
    dFuZe_ SynlyLeo   1 days ago

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

  • Omega Echo
    Omega Echo   1 days ago


  • Funpuns 08
    Funpuns 08   1 days ago

    Kid: I wanna live for atleast 70Anti- Vaccine Mom: I’m about to end this man’s whole career