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,
Don Jenner Don Jenner Felix Donovan 'Don' Jenner (15 November 1892 – 31 March 1953) was an English cricketer. Jenner was a right-handed batsman who bowled both right-arm medium pace and right-arm off break. He was born at Hastings, Sussex. Jenner made his first-class debut for Sussex County against Nottinghamshire in the 1919 County Championship. He made 27 further first-class appearances for Sussex, the last of which came against Hampshire in the 1921 County Championship. He had modest success during his first-class career, scoring a total of 595 runs at an average of 12.14, with a high score of 55. This was