Edward Jenner full-blown infection. Later, he injected Phipps with variolous material, the routine method of immunization at that time. No disease followed. The boy was later challenged with variolous material and again showed no sign of infection. Donald Hopkins has written, "Jenner's unique contribution was not that he inoculated a few persons with cowpox, but that he then proved [by subsequent challenges] that they were immune to smallpox. Moreover, he demonstrated that the protective cowpox pus could be effectively inoculated from person to person, not just directly from cattle. Jenner successfully tested his hypothesis on 23 additional subjects. Jenner continued his research
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