Search Results: "Variola"

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• 10:31 Popular

  This Is How Your Body Builds Immunity

  1,478 views / 0 likes - added 4 years ago

  We encounter bacteria, viruses and parasites all the time, but how exactly does our immune system kill these dangerous pathogens? Subscribe to Seeker! http://bit.ly/subscribeseeker Watch more Human! http://bit.ly/HUMANplaylist Visit our shop at http://sho

• 11:09 Popular

  How This Bizarre Virus Killed 500 Million People

  2,219 views / 4 likes - added 10 months ago

  Sources & further reading: https://sites.google.com/view/sources-smallpox/This video was made possible through a grant by Open Philanthropy.Check out '500 Million, But Not A Single One More' by Rational Animations here: https://youtu.be/ljmifo4Klss?si=uo5

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