History
The gruesome cowpox trick that inspired vaccination
HERE’S THE INTERESTING PART
Rubbing deeply infected bovine pus directly into an open wound sounds utterly insane, but it totally changed humanity. Wealthy landowners bravely allowed pioneering doctors to heavily scrape nasty blister fluids taken off diseased cows directly into their deeply sliced arms. This violently gross method somehow successfully induced lifelong immunity to far worse viral outbreaks.
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