Edward Jenner Tee

Yes, not a well-known face at all, but someone might ask, 'Who's that?' and you can tell them, 'This individual here has saved more lives than anyone else.'"

"Edward Jenner, the father of immunology, a pioneer of the vaccine concept, and the originator of the first vaccine (smallpox).

Now it seems a bit crude to use cow pus to prevent disease, but the word vaccine comes from the Latin 'vacca' for cow, and reminds us of its origin.

Although they say that he has saved more lives than anyone else thanks to the introduction of vaccines, he was not free from ridicule and criticism of his methods, even satirically.