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
Kendall Jenner multiple editorials and cover shoots for "LOVE" and various international "Vogue" editions, walked for Victoria's Secret, and acts as brand ambassador for Estée Lauder's multimedia ad campaigns. Jenner made her debut at No. 16 on "Forbes" magazine's 2015 list of top earning models, with an estimated annual income of . As of April 2017, she is one of the top 15 most followed celebrities on Instagram. In 2017, Jenner became the World's Highest-Paid Model on the "Forbes" top-earning models list. Jenner was born in Los Angeles, California, to retired Olympic decathlete champion Caitlyn Jenner (previously Bruce) and television personality Kris