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,
Smallpox demon parts of India, China, Africa and Latin America, sacrifices were made to appease the gods of smallpox. In medieval Europe, prayer and pious living were recommended as one way to guard against sickness. Many Japanese textbooks on dermatology stated that red light was able to weaken the symptoms of smallpox. This was common in China, India, Turkey and Georgia. In western Africa, the Yoruba god of smallpox, Sopona, was associated with the color red. The red treatment was given scientific authority by Finsen, who claimed that the treatment of smallpox patients with red light reduced the severity of scarring, and