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,
Statue of Edward Jenner, London Statue of Edward Jenner, London A statue of Edward Jenner, the physician, scientist and pioneer of the world's first vaccine, is located in Kensington Gardens in London. A work of the sculptor William Calder Marshall, the bronze was originally unveiled by Albert, Prince Consort in Trafalgar Square on 17 May 1858, before being moved to its present location in 1862. It is a Grade II listed building. The statue depicts Jenner in a seated position with one hand holding papers and is upon a plinth of Portland stone with Jenner's surname inscribed on a front panel of Aberdeen granite. At