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
Campaigns of 1796 in the French Revolutionary Wars signed the Second Treaty of San Ildefonso with France on 19 August 1796, entering the war against Britain on the side of France in return for concessions in Italy. In response, Britain withdrew from Corsica in order to concentrate the Mediterranean fleet at Gibraltar against the combined threat. This article makes use of the out-of-copyright work "History of the French Revolution" by François Mignet (1824): Campaigns of 1796 in the French Revolutionary Wars The French Revolutionary Wars continued from 1795, with the French in an increasingly strong position as members of the First Coalition made separate peaces. Austria and Great