The food supply is safe, federal officials say, even though a fourth case of mad cow disease has been discovered in the United States. A 2009 ban on using cattle parts in animal feed may be why ...

Read CNN’s Fast Facts on Mad Cow Disease and learn more about the transmissible fatal brain disease found in cattle. ... BSE lesions are characterized by sponge-like changes seen under an ...

Is mad cow disease a virus or bacteria? It's neither. ... Such misfolded proteins produce havoc in nervous tissue, often leaving sponge-like holes in many parts of the brain.

A case of mad cow disease was discovered yesterday in California, sending carnivores across the country into a panic. But mad cow is exceedingly rare in the U.S. and not likely to be contracted by ...

U.S. Woman Dies From Mad Cow-Like Brain Disease That Lay Dormant for 50 Years A woman's human growth hormone treatments in childhood may have sealed her fate decades later, according to a new case ...

Mad cow disease and its human counterpart are among the most perplexing diseases on the planet. Research suggests that the agent that spreads the infection is not a conventional germ, like a virus.

As if mad cow disease isn't frightening enough, the cause is the stuff of science fiction. ... It's called a prion and scientists haven't seen anything like it since Louis Pasteur found germs.

USDA-mandated testing turned up a downed California dairy cow that was infected with bovine spongiform encephalopathy (BSE), also known as mad cow disease, the agency announced Tuesday.

An outbreak of mad cow disease in cattle in the United Kingdom in the 1980s and 1990s, and the subsequent detection in 2003 of one case in a cow in Washington state, garnered a lot of headlines.

2 dead from rare mad cow-like brain disease in Oregon, county health officials say There are about 500 new cases of the disease in humans per year in the US, according to the Creutzfeldt-Jakob ...