Edward Anthony Jenner, FRS (17 May 1749 – 26 January
1823) was an English physician and scientist from Berkeley,
Gloucestershire, who was the pioneer of smallpox vaccine.  He is often called “the father of immunology”, and his work is
said to have “saved more lives than the work of any other man”.
The article is interesting but it’s almost more interesting to think about
1) people’s rejection of immunizations today in their certainty that vaccines cause other issues (autism seems to be the current favorite bogey). If there were still full blown epidemics of diseases that kill in awful, painful ways, those people would likely be the first up screaming “Do something! Anything!” Bellowing for forced inoculation. In fact, maybe they need to visit Africa or India, where nasty cooties still make short shrift of people.
And 2) the casual way he infected people… He purposely, repeatedly, infected people w disease to test his hypothesis. That’s why he’s the Father, because he had a hypothesis and acted on his hypohesis. I have always loved scientists. The search for answers can be of more worth than the tools to get those answers. Not that they are evil, “why some of my favorite people are scientists!” (heheheh), but their motivation and belief in a higher cause, can lead to an interesting point of view w regard to the value of life (sacrifice for the ultimate good).
The article says that inoculation has actually been around in some form or other for hundreds of years. There is truly nothing new under the sun 😉