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,
1978 smallpox outbreak in the United Kingdom police photographer she joined the University of Birmingham Medical School, where she was employed as a medical photographer in the Anatomy Department. Parker often worked in a darkroom above a laboratory where research on smallpox viruses was being conducted. Smallpox is an infectious disease unique to humans, caused by either of two virus variants named "Variola major" and "Variola minor". The last naturally occurring infection was of "Variola minor" in Somalia in 1977. At the time of Parker's death, a laboratory at University of Birmingham Medical School was conducting research on variants of smallpox virus known as "whitepox viruses", which