Edward Jenner full-blown infection. Later, he injected Phipps with variolous material, the routine method of immunization at that time. No disease followed. The boy was later challenged with variolous material and again showed no sign of infection. Donald Hopkins has written, "Jenner's unique contribution was not that he inoculated a few persons with cowpox, but that he then proved [by subsequent challenges] that they were immune to smallpox. Moreover, he demonstrated that the protective cowpox pus could be effectively inoculated from person to person, not just directly from cattle. Jenner successfully tested his hypothesis on 23 additional subjects. Jenner continued his research
Caitlyn Jenner Caitlyn Jenner Caitlyn Marie Jenner (born William Bruce Jenner on October 28, 1949) is an American television personality and retired Olympic gold medal-winning decathlete. Jenner was a college football player for the Graceland Yellowjackets before incurring a knee injury that required surgery. Coach L. D. Weldon, who had coached Olympic decathlete Jack Parker, convinced Jenner to try the decathlon. After intense training, Jenner won the 1976 Olympics decathlon event at the Montreal Olympic Games, gaining fame as "an all-American hero". Jenner set a third successive world record while winning the Olympics. The winner of the Olympic decathlon is traditionally given