man died of mad cow disease, cattle options traded on the Chicago Mercantile ... Most scientists believe that BSE is caused by a small agent called a prion. A prion is neither a virus nor a bacterium, ...

So far, the virus hasn’t shown any signs of worrying ... has been tightly regulated since the outbreak of BSE – or ‘mad cow disease’ – 30 years ago. Experts are unsure but fear it ...

It is not caused by a virus, and has no treatment or vaccine. Georgia DNR reports that CWD is in the same family of diseases as “mad cow disease,” but has never been documented in people.

One way this can happen is when people eat beef from cows that have bovine spongiform encephalopathy, better known as "mad cow disease." The U.S. has had strict regulations in place since the ...