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,
Jenner Glacier vaccination. Jenner Glacier Jenner Glacier () is a glacier long flowing southwest from the Solvay Mountains between Paprat Peak and Kondolov Peak into the eastern arm of Duperré Bay, in the southern part of Brabant Island in the Palmer Archipelago, Antarctica. The glacier was shown on an Argentine government chart in 1953, but not named. Photographed by Hunting Aerosurveys Ltd in 1956–57, and mapped from these photos in 1959, it was named by the UK Antarctic Place-Names Committee for Edward Jenner, an English physician who was a pioneer of preventive medicine, and who instituted the use of cowpox vaccine in