일본에서 소해면상뇌증(BSE)의 현재 상황

The risk assessment, outbreak and control of BSE in Japan

Bovine spongiform encephalopathy (BSE) has become an important concern in food safety. Until now, 36 cases of BSE have been detected in Japan. Control programs have led to a decrease in the annual numbers, and Japan has now been categorized as a "controlled risk" country by the World Animal Health Organization (OIE). In spite of a worldwide decrease in the number of BSE cases, sporadic occurrences of atypical BSE cases have been reported. In Japan, 2 atypical BSE cases were confirmed. A Japanese L-type-BSE (BSE/JP24) has exhibited transmissibility to bovinized transgenic mice (TgBoPrP) it has a shorter incubation period than that of classical BSE. Although the origin of atypical BSE is obscure, risk analysis of newly emerged BSE prions of cattle and humans is required.