Cowpox children. In 1796, British medical practitioner Edward Jenner tested the theory that cowpox could protect someone from being infected by smallpox. Although cowpox originates on the udder of cows, Jenner took his sample from a milkmaid, Sarah Nelmes. Jenner extracted the pus of one of the lesions formed by cowpox on Nelmes to another individual who never had smallpox, James Phipps. He eventually developed a scab and fever that was manageable. Approximately six weeks later, Jenner then introduced an active sample of the smallpox virus into Phipps to test the theory. After being observed for an extended amount of time,
Caitlyn Jenner This prompted the "Eugene Register-Guard" to ask: "Who's Jenner?" Following the Olympic Trials, Jenner finished in tenth place in the decathlon at the 1972 Summer Olympics in Munich. By watching Soviet Mykola Avilov win the event, Jenner was inspired to start an intense training regimen. "For the first time, I knew what I wanted out of life and that was it, and this guy has it. I literally started training that night at midnight, running through the streets of Munich, Germany, training for the Games. I trained that day on through the 1976 Games, 6–8 hours a day, every day,