Mozart and smallpox the imperial family were successful, and led to greater public acceptance for the procedure. Smallpox struck the Mozart family again in the next generation: Nannerl's eldest son Leopold and two of her stepchildren caught the disease during an outbreak in the Salzburg area in 1787. All three children survived. In 1796, the discovery of vaccination—the use of the related cowpox virus to immunize against smallpox—by Edward Jenner revolutionized the ability of medicine to deal with smallpox. Vaccination reached Vienna around 1800, when yet another local epidemic created impetus for its adoption. One of the doctors trained in the Vienna campaign,
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