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,
Kendall Jenner Jenner. Jenner's middle name was a tribute to her mother's best friend Nicole Brown Simpson, who died just before Jenner was conceived. Jenner was raised in a stepfamily with one younger sister, Kylie, and eight half-siblings. Jenner is half sister to Burt and Casey Lynn Jenner through Caitlyn and first wife Christie Crownover. Through Caitlyn and second wife Linda Thompson, Jenner is half sister to indie pop singer Brandon and "The Hills" actor Sam "Brody" Jenner. Jenner is maternal half sister to reality television celebrities Kourtney, Kim, Khloé, and Rob Kardashian through mother Kris Jenner. Jenner was raised with her