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 Culver's, Stanton's, and Wilkes' stories again, and met yet another person who had become a Christian after an encounter with Jenner. Finally arriving in Sydney, Dixon asked Alec Gilchrist of Campaigners for Christ if he knew a man who asked strangers on George Street whether or not they were headed for heaven or hell. Gilchrist was familiar with Jenner and informed Dixon about how to contact Jenner. Dixon visited Jenner at his house and told him about all the people he had met who had become Christians because of Jenner's evangelism. Jenner, now fifty years old, had never before heard