"Bovine Spongiform Encephalopathy (BSE) started, 20 years ago, a devastating health and food crisis throughout Europe. Classical BSE is now under control as a result of the meat and bone meal ban. However, tonsil analyses suggest that there may be an alarmingly high number of asymptomatic PrPSc positive cases. Transmission through blood transfusion is another important concern, as are recent “atyp ...