钩端螺旋体(钩体)病是人兽共患的急性传染病。广安县是钩体病的老疫区,1961年始有疫情报告,1973年经血清学和病原学证实,以后年年发病。1987年秋,该县发生钩体病特大爆发流行,现报告如下。一、材料与方法1、材料资料来自该县卫生局、防疫站。全部资料均系疫区现场获得。资料可靠。2、方法采用普查、抽样和实验证实。普查内容包括一般资料如地区、人口、田土面积、年龄、性别、职业、发病 Leptospira (Leptospira) is a zoonotic infectious disease. Guang’an County is leptospirosis old disease area, 1961, there have been reports of epidemics, confirmed by serological and pathogenic in 1973, after the onset of disease. The fall of 1987, the county occurred a large outbreak of leptospirosis epidemic, are as follows. First, materials and methods 1, material information from the county health bureau, epidemic prevention station. All the data are obtained from the affected area. Data is reliable. 2, Methods Census, sampling and experiments confirmed. Census includes general information such as area, population, area of ​​land, age, sex, occupation, incidence