对山西省襄汾县古城乡钩端螺旋体病历史疫区人与家畜钩端螺旋体隐性感染进行调查，结果表明：健康人群钩端螺旋体隐性感染率２．０６％；猪隐性感染率８．００％，牛未检出。古城乡曾于１９７６、１９７９年发生由猪作为主要传染源的洪水型和雨水型钩端螺旋体病暴发流行，虽然在其后的１５年中无人间钩端螺旋体病发生，但猪的感染率仍较高，说明钩端螺旋体仍在猪中循环，山西已经成为以猪作为主要传染源的钩端螺旋体病经济疫源地。 The investigation of latent infection with Leptospira of Leptospira in people with history of Leptospirosis in the ancient urban and rural areas of Xiangfen County, Shanxi Province showed that the latent infection rate of Leptospira was 2.06% in healthy population and 8 .00%, cattle not detected. The prevalence of flooding and rainwater-borne leptospirosis in pigs as the main source of infection in ancient cities and towns in 1976 and 1979 was not observed. Although no human leptospirosis occurred in the next 15 years, the prevalence of pigs remained Higher, indicating that Leptospira still circulating in pigs, Shanxi has become a pig as the main source of infection leptospirosis economic foci.