• fakeman_pretendname@feddit.uk
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      10 hours ago

      No, I remember learning about it at school. She found that people who caught cowpox (which was mild) never caught smallpox (which was deadly), so she took some stuff from a cowpox lump and injected it into a boy called James Phipps, who then, despite her best efforts to repeatedly infect him with smallpox, remained smallpox-free, therefore inventing the first vaccine.