How Do Vaccines Work?: Viruses & Vaccines: Crash Course Biology #39

From the flu to COVID-19, viruses are a major threat in our everyday lives. In today’s episode of Crash Course Biology, we’ll learn why viruses are like genes in a box, and how they invade and spread between cells. We’ll also discover how vaccines and medicines help our bodies fight back.
Introduction: Discovering Viruses 00:00
What We Have in Common With Viruses 1:24
Evolutionary Theories of Viruses 2:49
Hosts & Infection 3:55
Retroviruses 6:49
Vaccines 8:11
Dr. Quarraisha Abdool Karim & Antivirals 9:41
Review & Credits 11:39
This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit BioInteractive.org/CrashCourse for more information.
Check out our Biology playlist here: • Biology
Watch this series in Spanish on our Crash Course en Español channel here: • Crash Course Biología
Sources: docs.google.com/document/d/1G...
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[@1989Nihil]

This video should be mandatory in school health classes.

[@philippebrehier7386]

Even in 2024, there remains a need to educate people of all ages about this. Thanks.

[@philippebrehier7386]

Another comment for the algorithm.

[@shadowsixes]

An important note is the fact that vaccines do not cause Autism Spectrum Disorder. The doctor who found the ‘link’ between these two factors has lost his licence as the study was poorly done and inaccurate.

[@nebulan]

It'd be interesting to learn more about Dr. Quarraisha Abdool Karim. A woman of color doctor in apartheid South Africa dealing with a disease that was relegated to a "gay disease" in America. I don't know how it was treated in South Africa, but i bet it wasn't great. I love women-in-STEM stories, I'm going to look her up.

[@NAKd_life]

Really wish this video was available at the start of the mRNA conspiracy theories, but sharing it now with the uneducated will still help.

[@prometheus140]

4 years late but better than never!

[@FormulaMeme]

While I'm not a STEM student, I took AP Biology during 2020-21 which was right in the beginning of the pandemic. This video feels like a flashback to that, in a good way

[@SciMinute]

3:49 If a virus cannot live on its own without other life, what would it begin with? 🤨 The natural world is so complicated! Anyway, thank you for the great lecture! 👍

[@13LesMonX]

Great video, very informative as always! A video we have desperately needed for years.❤❤❤

[@SuperKat619]

Thanks for the knowledge. 😊

[@gloomingforest]

Such a good video! I'm writing my biology final on thursday and this was really helpful

[@Elyana28]

Loving this series!!🎉

[@sergiohernandezdiaz6032]

This is definitely interesting! Thank you CC for your hard effort with this series!

[@johnheath86]

2:11 Nucleic Asses?? 😂😂

[@MichaelSmith-ij2ut]

As an infectious near-living agent myself, this episode really appealed to me

[@muhammedshifanv.m2146]

Remembering learning this things in 12th Biology NCERT textbook... 🙃

[@corinnekenny8401]

I’d like a lecture on how the Shingles vax protects since the virus is already in the patient. I understand how it helps Polio vax protects from in infection. Thanks.

[@miriamzajfman4305]

Thank you Dr. Sammy for this innovating podcast ! , and for sharing your knowledge with us 👍

[@alewiina]

Love this video and love the narrator! Great job :)

[@lordironhidex]

As much as educative and informative this is, this’ll get some flak. Ready for it 😂 Also, can’t resist it, first xD

[@gailaltschwager7377]

Thank you!

[@kekoa6]

Love it keep it up 🎉

[@humhallelujah]

hell yea my exam is on this tomorrow, just on time!

[@Poppacap79]

I’m sure viruses inspired the movie Prometheus. The discussion about whether viruses are alive or not has always been interesting to me.

[@ishamalik9916]

i just love your videos so informative ans amazingg :)

[@marksegall9766]

Love the Visibility Scale at 1:48. It should be a poster!

[@IAmFlareon]

this taught me about viruses (how nice)

[@mocha9072]

Great video

[@kab6754]

From now on I'll only hear the Rocky theme music every time I get my flu shot 😂

[@zeekay3661]

Wow wow, this was a great video

[@lizichell2]

Great video. You should do prions.

[@stephaniehendricks3537]

First time being the first to comment on the video. Always a good job on the crashcourse videos!

[@astroace]

excited vaccine news out of the university of california riverside!!

[@philipmurphy2]

CrashCourse here with the useful facts

[@venom5552111]

Oo new video

[@Argacyan]

Retroviruses injecting the best 80's & 90's musical hits directly into our DNA

[@BasslineMusicGroupOFFICIAL]

Yeeeeeeeeaaaaaaaaaaaaaah!!!!!!!!!!!!!!!!! New Vid

[@therrydicule]

Please email this to Alex Jones, Jimmy Dore, everyone at Fox News, your uncle...

[@harleyquinn5774]

👍🏻

[@nickvinsable3798]

🙋‍♂️ Question: about the origin of viruses, is sperm & pollen a possible clue as to the origin of viruses?

[@Robonza]

Waiting for the comments

[@zebracorn9184]

Can’t wait to see this comment section

[@counciloflight9722]

how do people come up with these things???

[@robinsparrow1618]

first?

[@robinsparrow1618]

holy universal vaccine, batman!

[@apndix]

first

[@rollinthunder1000]

Am i first?

[@TheDanEdwards]

6k views (after four hours) and not a single comment? Hard to believe this may be the first comment. Odd....

[@muzikgod]

No comments? Is KZbin broken?

[@Crushbandicoot-wv8xb]

They don’t

[@timothylopez8572]

😡 TREASON,😒 I guess

[@boxkid759]

I'm immune to viruses. It's pretty neat.

[@ThePhilosophicalOne]

Disclaimer: As of 2024, germ theory is still just a theory....