Edward Jenner humans a cowpox vaccine against smallpox. For example, Dorset farmer Benjamin Jesty successfully vaccinated and presumably induced immunity with cowpox in his wife and two children during a smallpox epidemic in 1774, but it was not until Jenner's work that the procedure became widely understood. Jenner may have been aware of Jesty's procedures and success. A similar observation had also been made in France by Jacques Antoine Rabaut-Pommier in 1780. Noting the common observation that milkmaids were generally immune to smallpox, Jenner postulated that the pus in the blisters that milkmaids received from cowpox (a disease similar to smallpox, but
Caitlyn Jenner D. Weldon encouraged Jenner to switch to the decathlon. In 1970, Jenner placed fifth while debuting in the decathlon at the Drake Relays in Des Moines, Iowa. Jenner graduated from Graceland College in 1973 with a degree in physical education. At the 1972 U.S. Olympic trials in Eugene, Oregon, Jenner was in fifth place in the men's decathlon, behind Steve Gough and Andrew Pettes. Needing to make up a 19-second gap on Gough in the men's 1500 metres, Jenner qualified for the Olympic team by running a fast final lap, finishing 22 seconds ahead of the other runners. ( @25:58)