Smallpox 1718. In 1721, Cotton Mather and colleagues provoked controversy in Boston by inoculating hundreds. In 1796, Edward Jenner, a doctor in Berkeley, Gloucestershire, rural England, discovered that immunity to smallpox could be produced by inoculating a person with material from a cowpox lesion. Cowpox is a poxvirus in the same family as variola. Jenner called the material used for inoculation vaccine, from the root word "vacca", which is Latin for cow. The procedure was much safer than variolation, and did not involve a risk of smallpox transmission. Vaccination to prevent smallpox was soon practiced all over the world. During the
Brody Jenner Khloé, and Rob; and his half-sisters, Kendall and Kylie Jenner. Jenner was born in Los Angeles, California, on August 21, 1983, to reality television personality and retired Olympics champion Caitlyn Jenner (formerly Bruce Jenner) and actress Linda Thompson. He is the half-brother to Burton "Burt" and Cassandra "Casey" Jenner through Caitlyn's marriage to Chrystie Crownover, which lasted from 1972 until 1981. Jenner is the younger brother of Brandon Jenner, also a reality-television personality. After Jenner's parents divorced in 1985, Caitlyn Jenner married Kris Kardashian, the ex-wife of attorney Robert Kardashian, in 1991. Consequently, Jenner became a stepbrother of Kourtney, Kim,