How prevalent is mad cow disease?
Worldwide there have been more than 180,000 cases of mad cow disease since it was first diagnosed in 1986 in Great Britain. Since that time, the disease has been confirmed in Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Ireland, Israel, Italy, Japan, Luxembourg, Liechtenstein, the Netherlands, Northern Ireland, Poland, Portugal, Slovakia, Slovenia, Spain, and Switzerland. The disease was confirmed in Canada in May 2003 and in the United States in December 2003.