And the current state of the art in predicting an epidemic -- if you're the CDC or some other national body -- is to sit in the middle where you are from physicians and laboratories in the field that report the prevalence or the incidence of certain conditions.
现在预测传染病的方法 -- 如果是美国疾病控制预防中心或者其他国家级的机构 -- 就是呆在原地 从医生和实验室 收集数据 来分析疾病的流行性和发病率。