"The Dugway sheep incident, also known as the Skull Valley sheep kill, was a 1968 sheep kill that has been connected to United States Army chemical and biological warfare programs at Dugway Proving Ground in Utah. Six thousand sheep were killed on ranches near the base..."
58-59: Winifred Mary Rawlings, “Villain with a Tail”: The author speculates that gases from comets can cause plagues and epidemics, a generally discredited theory. However, Fred Hoyle and Chandra Wickramasinghe argue that some illnesses are of extraterrestrial origin, including the 1918 flu pandemic and certain outbreaks of polio and mad cow disease. For the 1918 flu pandemic they hypothesize that cometary dust brought the virus to Earth simultaneously at multiple locations.
Two trends -- an increasingly connected world and dropping vaccine rates -- are colliding to create mini measles outbreaks across the U.S. The consequence has been a slow but steady increase in U.S. measles cases. In 2014, there were 644 cases, the most in 20 years.