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
Frank Jenner of even one person living their lives as Christians as a result of his evangelism, and he cried upon hearing that there were several. After returning from Australia, Dixon went on to discover more people who had become Christians because of Jenner in Bournemouth, Cumbria, India, and Jamaica. By 1979, Dixon had discovered ten people who had become Christians as a result of Jenner's evangelism. It is because of Dixon that the story of Jenner's evangelism began to be told. Dixon's wife Nancy wrote an account of Jenner's evangelism, which she called "The Jenner Story". In later years, Jenner developed