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,
National Anti-Vaccination League National Anti-Vaccination League The National Anti-Vaccination League was founded in 1896 in Britain, growing from earlier smaller organizations in London, originally under the title Anti-Compulsory Vaccination League. The organisation opposed compulsory vaccination, particularly against smallpox. It was part of a wider anti-vaccinationist movement, arguing that vaccination did more harm than good. After the death of Richard B. Gibbs in 1871, the Anti-Compulsory Vaccination League underwent various changes until 1876 when it was revived under the presidency of the Rev. W. Hume-Rothery. In 1880 the movement was enlarged and reorganised by the formation of "The London Society for the Abolition of