Smallpox 1718. In 1721, Cotton Mather and colleagues provoked controversy in Boston by inoculating hundreds. In 1796, Edward Jenner, a doctor in Berkeley, Gloucestershire, rural England, discovered that immunity to smallpox could be produced by inoculating a person with material from a cowpox lesion. Cowpox is a poxvirus in the same family as variola. Jenner called the material used for inoculation vaccine, from the root word "vacca", which is Latin for cow. The procedure was much safer than variolation, and did not involve a risk of smallpox transmission. Vaccination to prevent smallpox was soon practiced all over the world. During the
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