One of the most existentially frightening illnesses ever to be discovered was mad cow disease, a fatal prion-spread illness ...

Although no cases of mad cow disease have been found in humans or livestock in the United States, according to a Purdue expert, recent news articles have suggested that individuals have died from the ...

In the late 1990s, there was an outbreak of mad cow disease in humans in Great Britain, which caused the country to suspend beef consumption for several months.