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 years old. Once Jessie had recovered from her illness, they returned to Sydney on SS "Oronsay". Jenner would normally wake up to pray at 5 am each day. In the 1940s, Jenner left the Glanton Brethren and joined the Open Brethren. For the rest of his life, Jenner attended Open Brethren churches: one on Goulburn Street in Sydney and the other in Bexley, New South Wales. At these churches, people did not understand what narcolepsy was and thought that Jenner was consistently falling asleep during services because he lacked respect for God. The church on Goulburn Street also disapproved of