3 Deadly Diseases You've Probably Never Heard Of

  • Added:  3 months ago
  • To learn more about NTDs and the organizations saving the lives of those affected by them, visit: b-gat.es/2pYX7ol

    There are some diseases, like Zika or malaria, that get a lot of media coverage. However, every year, millions of people are infected with diseases that are just as deadly that we never hear anything about.

    Hosted by: Hank Green
    Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow
    Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Patrick D. Ashmore, Charles George, Bader AlGhamdi
    Looking for SciShow elsewhere on the internet?
    Facebook: www.facebook.com/scishow
    Twitter: www.twitter.com/scishow
    Tumblr: scishow.tumblr.com
    Instagram: instagram.com/thescishow

    Thumbnail Image:




    African trypanosomiasis:
  • EducationEducation
  • Runtime: 5:20
  • SciShow  science  Hank  Green  education  learn  ntds  neglected tropical disease  zika  malaria  HIV  schistosomiasis  disease  parasite  insect  larvae  biology  health  snail  chagas  central america  south america  kissing bug  infection  tsetse fly  African trypanosomiasis  African sleeping sickness  africa  bill gates  sleeping sickness  

Comments: 653

  • dirty person
    dirty person Month ago

    Well I'm fucked

  • Emji Amsdaughter
    Emji Amsdaughter 2 months ago

    I knew about sleeping sickness, but not the other two.

  • FrighteningSpoon
    FrighteningSpoon 2 months ago

    Now I hate this show

  • ihartevil
    ihartevil 2 months ago

    thx for this ha bisky vid and the whole just not getting NTDs tell that to your brother who got one it doesnt work like that but i am not remotely worried about them its like worrying about dengue and doing something stupid and poisoning yourself with bug spray chemicals over something that is extremely unlikely to happen if you avoid places you arent supposed to go to you will be fine

    allie wes trippy didnt quite understand the curse of the volcanoes she was on the places that are so called cursed just means its very likely you will get sick there and its unknown why well we know why thats where the misquotes with dengue congregate

    if there is a story about why you shouldnt be somewhere listen to that warning it doesnt nessisarily mean you will get sick if you trespass but there is probably a chance you will get hurt or sick

  • Charly Dear
    Charly Dear 2 months ago

    i new about the kissing bug and the sleeping sickness, not the first one though i wonder what the world be like if nobody ever had a disease ?

  • kenny edwards
    kenny edwards 3 months ago

    Why are there so many horrible diseases in the tropics compared to the more temperate regions of the world? It ain't fair!

  • musechick101
    musechick101 3 months ago

    I have actually heard of all of these diseases!!!! Although I'm not sure if that's because I enjoy freaking myself out with having tropical diseases despite the fact I live nowhere near the tropics or because my roommate was pre-med....

  • Sheryl Hosler
    Sheryl Hosler 3 months ago

    When speaking about Sleeping Sickness, it would have been nice if you mentioned the other huge deleterious effect it has on people in Africa: it heavily affects livestock, meaning that conventional agriculture is very hard on them. Most people have to plow their land by hand because they can't keep oxen alive long enough to be useful.

  • Hoang Ly Minh
    Hoang Ly Minh 3 months ago

    A Bill Gates episode, Awesome!

  • Max Vieralilja
    Max Vieralilja 3 months ago

    I feel absurdly pleased to discover that I know two out of three

  • Stephanie Mendes
    Stephanie Mendes 3 months ago

    I live in Brazil and I studied all those diseases in school. xD

  • Brianna Shults
    Brianna Shults 3 months ago


  • R MH
    R MH 3 months ago

    Me: "I want to travel one day!"Me: *watches video*Me: "I'm never going anywhere ever."

  • Courtney Courteau
    Courtney Courteau 3 months ago

    Thanks for giving me new reasons to not go outside

  • Spicy Citrus
    Spicy Citrus 3 months ago

    bill gates the science sponsor

  • allslaves dollarbanks
    allslaves dollarbanks 3 months ago

    Why is Israel allowed to develop disease weapons, that's just one of evil programs, do one on operation talpiot, or technion. Use of banned weapons on civilians in own country, arming, protecting, and treating ISIS. Science should be used to help folks, not destroy lives and cause misery and death, these diseases could be wiped out like others. Interesting.

  • Igor M. Carvalheiro
    Igor M. Carvalheiro 3 months ago

    I'm relieve, where I live we just have 2 out of those 3

  • Matt Goorahoo
    Matt Goorahoo 3 months ago

    I see that no one here is complaining about how much Hank is moving his hands and head/gesturing....curious.

  • Telia W
    Telia W 3 months ago


  • Renasance
    Renasance 3 months ago

    I've heard of all of these. Just took my parasitology finals.

  • Doctor BrainTaser
    Doctor BrainTaser 3 months ago

    Huh, as a brazilian I never knew they were neglected on american media. Those are pretty mainstream diseases here, if you've been through high school. Makes sense they wouldn't be well known up there though.

  • Jessica Bagwell
    Jessica Bagwell 3 months ago

    Have you heard about the vaccine for schistosomiasis patented kind of recently? The researchers are still working on it, but it might have a lot of potential.

  • Indigo
    Indigo 3 months ago

    when you've heard of all of these diseases

  • Adison Unsworth
    Adison Unsworth 3 months ago


  • daedra40
    daedra40 3 months ago

    More episodes by Bill Gates!
    They're humanly awesome!!

  • Lilly Belle
    Lilly Belle 3 months ago

    Spongebob: Sorry, Gary, I have to get rid of you, Mr.Krabs said you might give us all Snail Fever!

  • Clorox Bleach
    Clorox Bleach 3 months ago

    why do you have to terrify me?

  • oliver mobey
    oliver mobey 3 months ago

    I think all of these have been in house.

  • Alex Foster
    Alex Foster 3 months ago

    somehow, I already knew about the first disease

  • Jesus Ramirez Romo
    Jesus Ramirez Romo 3 months ago

    Knew all of them, saw them on my Parasite class, Inmunology class and Hematology class

  • Madalin Grama
    Madalin Grama 3 months ago

    I knew about all of these. But then again, I am a doctor :-p.

  • The Italian Goomba
    The Italian Goomba 3 months ago


  • I'm Blue
    I'm Blue 3 months ago

    I live in equatorial area in southeast Asia and I've never heard such diseases here.

  • Josobro
    Josobro 3 months ago

    I feel itchy

  • Ian and Taryn Podcast
    Ian and Taryn Podcast 3 months ago

    Do condoms protect against NTD's tho?

  • CeticTales
    CeticTales 3 months ago

    so snail disease does exist...

  • Wraggles
    Wraggles 3 months ago

    Was not expecting bill gates. but makes sense.

  • Awes0meGamingNetw0rk
    Awes0meGamingNetw0rk 3 months ago

    Dengue Fever is one of those NTDs, it took my father's life.

  • Mason Westphal
    Mason Westphal 3 months ago

    @SciShow do sidewalks increase earthworms likelihood of survival in a rain storm?

  • Bushcraft1974
    Bushcraft1974 3 months ago

    I wonder if the sleeping sickness bug could treat fatal familial insomnia?

  • Roddy Lawrence
    Roddy Lawrence 3 months ago

    Why are tropical diseases seemingly more virulent?

  • Youri Khan
    Youri Khan 3 months ago

    This is an inaccurate description of the sleeping sickness. (ie: insomnia and periods of manic activity are part of the symptoms)

  • Bleeding Rose
    Bleeding Rose 3 months ago

    this terrifies me

  • RandomGuy
    RandomGuy 3 months ago +1

    Thanks for the nightmares Bill!

  • Bob Wolf
    Bob Wolf 3 months ago

    Wow imagine that.. Science..
    Unlike what allot of Christians believe the conditions aren't caused by gods anger.

  • LagiNaLangAko23
    LagiNaLangAko23 3 months ago

    Schistosomaisis is hard to avoid for farmers working on rice paddies.

  • Noneofyour Business
    Noneofyour Business 3 months ago

    Ok now I want to move to Iceland.

  • Troy Oliver
    Troy Oliver 3 months ago

    I went into this feeling confident, thinking I'd be knowledgeable enough to go "Ha! I have heard of these!" when I heard them.

    ....And now I pay for my arrogance because I had no idea about the first one...

  • rodanzig
    rodanzig 3 months ago

    Bill Gates is a Neglected Disease .

  • Stefan Smith
    Stefan Smith 3 months ago

    +scishow wow you broke tsetse fly with that pronunciation, but your American.
    I'll forgive you...

    You don't know how to clap you tung.

  • SaroDracon
    SaroDracon 3 months ago +1

    Why does your camera man have the nickname "Tuna" or do I really not wanna know? @5:10

  • Leannyly
    Leannyly 3 months ago

    As a health professional student I thought this was one of the best scishows in a while!! Loved it!

  • King John Un
    King John Un 3 months ago

    When people say Vegan Gains' wife isn't doing anything, but he's actually made this video happen. Thanks, Bill Gates.

  • Koshan Pillay
    Koshan Pillay 3 months ago

    Don't forget the friendzone disease, the single disease and forever alone disease.

  • suolihuuhtelu
    suolihuuhtelu 3 months ago +1

    Bill i forgive you for windows vista.

  • MissWonderland
    MissWonderland 3 months ago

    can you do a video on the development/history of the hypodermic​ needle?

  • Jerônimo Nunes
    Jerônimo Nunes 3 months ago

    The two first ones are quite known in Brazil, schistosomiasis = "esquistossomose" or "xistose" and chagas is just "doença de chagas". We study them at elementary school, how they are transmitted and how to prevent them.

  • Hisham Ashafie Ibrahim
    Hisham Ashafie Ibrahim 3 months ago

    "land of MENSTERUATING men".. The most important symptom of Schistisomiasis is BLOODY URINE, hence the name given to men (farmers) who have it in Egypt, and i am serious u can check it out.. we in Sudan, especially in rural areas of Gezira state, its common cuz of the famous gigantic agricultural scheme, were water channels and streams are common.. Schistisomiasia is the medical term, pple silmply call it "Bilharsia"..

  • Scheefinator
    Scheefinator 3 months ago

    Just use Crispr

  • Karasu Inaiga
    Karasu Inaiga 3 months ago

    At 1:52, "The main way to treat it is to prevent it." This is a fundamental misunderstanding of medical terminology. Treatment is making unhealthy people into healthy people. Prevention is making already-healthy people stay healthy people. You outlined no way of saving those who are already infected.

  • Rodrigo
    Rodrigo 3 months ago

    Thank you for talking about these diseases. They are severe threats to us in Brazil. All help is wellcome.

  • BanHammer
    BanHammer 3 months ago

    4. Salt deseaseeseases

  • 9inchtablet
    9inchtablet 3 months ago

    I've actually heard of all of these diseases, but that's because my grandfather used to be stationed in places that had them, so he had to treat a lot of his patients that had it or help to make sure they never get it in the first place. He said those tropical diseases ain't no joke.

  • Michelle not
    Michelle not 3 months ago

    Fuck Bill Gates!

  • Puntai Suyasri
    Puntai Suyasri 3 months ago

    Thanks for giving me nightmares I live in a tropical country

  • Austin Murre
    Austin Murre 3 months ago

    Wait wait wait..... THE Bill Gates???

  • Teagan P
    Teagan P 3 months ago

    Cool, I've heard of all of those, Trypanosomiasis was mentioned in my bio class this semester when we did protists, and now we're on animals, and we just did Flatworms and Parasitic nematodes today. We learned about a whole of bunch terrifying tropical diseases, right before lunch... Ascaris, Hookworm, Trichina worm, Filaria worm, all with lovely pictures.

  • RageBasterd
    RageBasterd 3 months ago +1

    is it ok that tsetse fly give me a smile..
    tsetse means tit in hebrew, now all i can think of is, flying breasts. just pollination the African landscape with milk.

  • Emilio Pavon
    Emilio Pavon 3 months ago

    Oshit!My city could be infected!

  • Crystal Moreno
    Crystal Moreno 3 months ago

    These illnesses are not really easy to treat. Yes there are still way more places that haven't been reached by vaccines or antidotes. Then what is lead to believe . Still a lot of people in much need of medical attention .

  • maggie tamblin
    maggie tamblin 3 months ago

    Does your sleeping position have an effect on your sleep?

  • Mars Violet
    Mars Violet 3 months ago

    BILL GATES?!!?!??!?!?!?!?!?!?!?!?!

  • AttackCommander
    AttackCommander 3 months ago

    I always wondered why diseases just like to take as many of us down along with themselves in the end...

  • Audrey Winter
    Audrey Winter 3 months ago

    +SciShow it would be so great in this context if you promoted Charity: Water (www.charitywater.org/).
    They work to get clean water to everyone and with SciShows influence they could do so much more and prevent some of those terrible diseases! <3

  • Gabriella Dean
    Gabriella Dean 3 months ago

    Thank you scishow and and Mr. Gates! 😀

  • liiparks
    liiparks 3 months ago

    My dad got Chagas as a child and until he died (in a car accident at 60) he had no symptoms. But his younger sister died of it.

  • PRose84
    PRose84 3 months ago

    Thumbs up for Bill Gates!

  • just googleit
    just googleit 3 months ago

    When you watched House so you've heard of all of these...

  • Hana Cizej
    Hana Cizej 3 months ago

    If pain killers inhibit pain receptors and so numb all your pain in your body, why can you still feel a cut or if you run into something? Thank you!!! :)

  • Lucy Hanouille
    Lucy Hanouille 3 months ago

    Yes, insecticides kill the offending bugs. The problem is that they don't stop killing there. I do hope that we look beyond the easy fix to one that won't kill everything else in the environment, including the people it was meant to save.

  • Das Mangofretchen
    Das Mangofretchen 3 months ago

    The sleeping sickness isn't well known? weird.

  • Baran Hekimoglu
    Baran Hekimoglu 3 months ago +1

    Remember when Kurzgesagt made a video on this? I'm glad you guys are doing it as well

  • baldieman64
    baldieman64 3 months ago

    The next big epidemic might not come from the tropics. Melting permafrost is releasing viable viruses that haven't stalked the Earth for thousand or even millions of years. So far, none have been pathogenic for humans but that doesn't mean we're safe.

  • jason rogers
    jason rogers 3 months ago

    With Schistosomiasis, no one really calls it snail fever. The more common name is Bilharzia

  • Raden Pak
    Raden Pak 3 months ago

    Bill Gates the SciShow guy

  • Tori Holbrook
    Tori Holbrook 3 months ago

    I'm an epidemiologist for the USAF. My coworkers and I guess which diseases these would be before watching the video... and we were all wrong because we picked way more obscure diseases 😂🙈 great video though! It's always good to get a review of our reportable diseases' geographic endimicity, symptoms, treatments, and general prevalence even when I think I know it!

  • DukeOfMarshall
    DukeOfMarshall 3 months ago

    Yeah, it's these kinds of things that make you not want to leave the country.

  • Moonspell67
    Moonspell67 3 months ago

    gates is a globalist- his family are euthanasia crazy- he is an evil fraudster and will be exterminated with vaccines.

    • Prism
      Prism 3 months ago

      Moonspell67 Oh no loominarty cuntfarmed!!!!1111

  • João Scaldini
    João Scaldini 3 months ago

    Since I live in Brazil, tropical deseases get very well explained in schools. But Chagas is scary because can be transmited through Açaí seeds and drinks

  • Dragon Ball Super Is NOT Canon

    Fuck bill gates

  • Atratzu
    Atratzu 3 months ago

    any of these diseases would most likely kill me, because I take so long to finally get to the point where I actually go to a doctor. :-/

  • Bork Lensar,Mayor of Suplex City,Kekistan

    hey! you left out islam and how to cure it...

  • Nappy Yammy
    Nappy Yammy 3 months ago

    Interestingly as a medical student in South Africa we learn about these diseases quite extensively especially schisto. I had no idea people didn't know about these (the ones endemic to Africa) because I've known about them since grade 4 biology.

  • Ribs
    Ribs 3 months ago

    NtDs needs to die

  • SkyRocket159
    SkyRocket159 3 months ago

    The only true solution is to defeat the Master.

  • Thiago Alves
    Thiago Alves 3 months ago

    I've heard of them every year in biology class

  • Dennis Haupt
    Dennis Haupt 3 months ago

    why doesn't the immune system fix it?

  • Sophie Robinson
    Sophie Robinson 3 months ago

    Thanks, Hank, Bill and Melinda

  • Rick Sanchez
    Rick Sanchez 3 months ago

    I'd like to find a cure for idiots disease.

  • Teddy Bear
    Teddy Bear 3 months ago

    3.pineapple pizzas

Analyse website