Edward Jenner

Thank you Edward Jenner for telling a young child that your hypothesis
could save him from the smallpox disease. You hypothesized that if you
rubbed gross cow pox liquid into that young child's small cuts that
you inflicted on him he would build a resistance to smallpox a
completely different disease that killed many, you then went on to put
straight up smallpox into his system directly. But still your
absolutely insane idea worked and you saved so many lives by inventing
the vaccination.

Sent from my iPad