Mad cow disease: What you need to know

Published On: Apr 25 2012 08:23:03 AM PDT   Updated On: Oct 15 2013 09:03:55 PM PDT

Up to 30,000 Brits may be human carriers of mad cow disease. Here's what you need to know about bovine spongiform encephalopathy, or BSE.

Mad Cow - Origins
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Where did it come from? -- Mad cow disease was first recognized as an infectious disease in 1986, after it began to appear in cattle in Great Britain in 1985.


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