Commonly Asked Questions About BSE
What is "Mad Cow Disease" (Bovine Spongiform Encephalopathy/BSE)?Mad Cow Disease is the commonly used name for Bovine Spongiform Encephalopathy (BSE), a slowly progressive, degenerative, fatal disease affecting the central nervous system of adult cattle. Since 1990, the U.S. Department of Agriculture (USDA) has conducted aggressive surveillance of the highest risk cattle going to slaughter in the United States. To date, the only cow that has been found to be affected with BSE was the one diagnosed with BSE in December 2003.
Source: CattleNetwork