epidemiological study on bse outbreak in japan.the aim of this study is to identify, as hypotheses, all feasible sources and routes of infection for the bse cases in japan, and to study the probability of each hypothesis. the strategy of this epidemiological study is as follows. 1) bse risk status in japan is tentatively divided into 3 stages, i.e., before 1996 april when administrative guidance for feed ban of cattle mbm introduced. after that to 2001 september, the first case of bse in japan, then, after 2001 october with real feed ban in ...200818460825
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