Three types of flu | Infectious diseases | Health & Medicine | Khan Academy

Share it with your friends Like

Thanks! Share it with your friends!


Learn about the three types of influenza virus (Type A, Type B, and Type C) and what makes them differ from one another. Rishi is a pediatric infectious disease physician and works at Khan Academy. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Created by Rishi Desai.

Watch the next lesson:

Missed the previous lesson?

Health & Medicine on Khan Academy: No organ quite symbolizes love like the heart. One reason may be that your heart helps you live, by moving ~5 liters (1.3 gallons) of blood through almost 100,000 kilometers (62,000 miles) of blood vessels every single minute! It has to do this all day, everyday, without ever taking a vacation! Now that is true love. Learn about how the heart works, how blood flows through the heart, where the blood goes after it leaves the heart, and what your heart is doing when it makes the sound “Lub Dub.”

About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.

For free. For everyone. Forever. #YouCanLearnAnything

Subscribe to Khan Academy’s Health & Medicine channel:
Subscribe to Khan Academy:


Fathmath Ulya says:

your handwriting is so talented when you are just writing in computer ….

Valeria morales says:

I got flu b right now

Hopewashere says:

I have Flu B right now! Everyone has it at my school and in my area right now!

koki nagashima says:

Guys I have influenza type A but I don't feel anything only the first day but now to at all I fell nothing weird right last year I hade influenza type B and I was very sick but now no

monia says:

It won't be a winter epidemic. Since you are expecting the elevation, it would just be an endemic. I think.

Amanda Misroame says:

i have it now went to stay in hospital for days….

Sarah Teasley says:

I have influenza type B

Supermatrixgirl says:

I got alll of them this winter. First I got B, A and now C however I'm finding it hard to breath as the cough is so strong.

Supermatrixgirl says:

OMG are you the same guy who does chemistry as well? The voice sounds the same…

G C says:

dogs can get the same flu i have a elderly dog just got this week bad

Ayumi Kawashima says:

Right now ihave the flu type a its horrible I can't move and can't talk can't even go to school

Mo Hado says:

can this happen to tall negroes with low iq? i know someone like that

Jesus ortiz says:

Right now I have flu type A

Wills Pram says:

I have the flu right now (Type B), that's why i'm watching this. Haven't slept in days, head hurts too much.

Ahmed-G says:

I was diagnosed with influenza B today. It is a lot worse than A.

Victoria Afolabi Aiyelokun says:

can these happen to teenagers to catch the flu and do they have a cure for all the influenza disease

Divine Destiny says:

Well, lets also mention that the SWINE FLU also has (3) strands in One Virus… Yes, the SWINE FLU was biogenetical developed in a lab.. How do I know this? We'll, I, personally got it in 2009.. I had a temperature of nearly 104, incredibly weak, and literally thought that I would die. My doctor though that it was a good idea to shoot me up with more of the virus, thus it sterilized me!!! Now, I can no longer have kids!!! Do the research and you will learn about "Agenda 21 & Eugenics." There are some very mentally sick people running our planet at this time; AND they are SICKER than I was, because, I AM very well now, despite it all.. I have Almighty Mother/Father God in my life as well as Christ & My Angels.. They said it wasn't my time to go, so I'm here to share my story with you all, that I WILL NEVER TAKE ANOTHER VACCINATION AGAIN.. LIFE OR DEATH.. NEVER.. THEY ARE VERY LETHAL .. AND DESIGNED WITH EVIL INTENTIONS. Infinite, Love, Compassion, & Forgiveness to the Evil-doers on this planet……… & Love, Compassion & Protection to my fellow Brother's & Sister's… The Light of Almighty God shall over-come ALL Darkness of ALL Evil-doers<3

Brittney Waters says:

i had type b and b is worse than a

Write a comment