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,
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