Viruses & Vaccines: How Do Vaccines Work?: 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 https://BioInteractive.org/CrashCourse for more information. Are you an educator looking for what NGSS Standards are covered in this episode? Check out our Educator Standards Database for Biology here: https://www.thecrashcourse.com/biolog... Check out our Biology playlist here:    • Biology   Watch this series in Spanish on our Crash Course en Español channel here:    • Crash Course Biología   Sources: https://docs.google.com/document/d/1G... *** Crash Course is on Patreon! You can support us directly by signing up at   / crashcourse   Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Leah H., David Fanska, Andrew Woods, DL Singfield, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Burt Humburg, Perry Joyce, Scott Harrison, Mark & Susan Billian, Alan Bridgeman, Breanna Bosso, Matt Curls, Jennifer Killen, Jon Allen, Sarah & Nathan Catchings, team dorsey, Bernardo Garza, Trevin Beattie, Eric Koslow, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Barrett & Laura Nuzum, Les Aker, William McGraw, Vaso, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Pineapples of Solidarity, Katie Dean, Stephen McCandless, Wai Jack Sin, Ian Dundore, Caleb Weeks __ Want to find Crash Course elsewhere on the internet? Instagram -   / thecrashcourse   Facebook -   / youtubecrashcourse   Twitter -   / thecrashcourse   CC Kids:    / crashcoursekids