Smallpox vaccine Smallpox vaccine Smallpox vaccine, the first successful vaccine to be developed, was introduced by Edward Jenner in 1796. He followed up his observation that milkmaids who had previously caught cowpox did not later catch smallpox by showing that inoculated cowpox protected against inoculated smallpox. Dryvax is a freeze-dried calf lymph smallpox vaccine. It is the world's oldest smallpox vaccine, created in the late 19th century by American Home Products, a predecessor of Wyeth. By the 1940s, Wyeth was the leading US manufacturer of the vaccine and the only manufacturer by the 1960s. After world health authorities declared smallpox had been
Smallpox vaccine in Koltsovo, Russia. These states report that their repositories are for possible antibioweaponry research and insurance if some obscure reservoir of natural smallpox is discovered in the future. The word "vaccine" is derived from "Variolae vaccinae" (i.e. smallpox of the cow), the term devised by Jenner to denote cowpox and used in the long title of his "An enquiry into the causes and effects of Variolae vaccinae, known by the name of cow pox". Vaccination, the term which soon replaced "cowpox inoculation" and "vaccine inoculation", was first used in print by Jenner's friend, Richard Dunning in 1800. Initially, the terms