钩端螺旋体病是由240多种致病性钩端螺旋体血清型引起的一种急性全身性感染,它是动物传染病,人通过直接或间接接触动物的尿液感染。方法以1991年5月15日～8月1日在美国依利诺州某县医院住院有发热而伴有钩端螺旋体病症状、年龄5～60岁且病因不清的病人为疑似病例,同时钩端螺旋体血清凝集效价>1:100。6例患儿中5例来自Dalzell镇,故以该镇与患儿同年级的所有儿童为研究对象,调查这些儿童有无疾病、受好、6～7月常去游泳的地方、动物接触及户外活动和运动项目,初步分析涉及的2个主要游泳区是Stell Tunnel Pond(STP)和Black Bridge Pond(BBP)。 Leptospirosis is an acute systemic infection caused by more than 240 pathogenic Leptospira serotypes, which are zoonotic infections of humans by urinary infections that directly or indirectly contact the animal. Methods From May 15, 1991 to August 1, 1991, patients with fever and concomitant leptospirosis were hospitalized in a county hospital in Illinois, United States. Patients aged 5 to 60 years with unclear etiology were suspected cases, Serum coagulation potency of leptospira> 1: 100.6 cases of children from Dalzell 5, so the town and children of the same grade all children as the research object to investigate whether these children with disease, by the good, 6 ~ The main swimming areas for July are the Stell Tunnel Pond (STP) and the Black Bridge Pond (BBP), which are frequented by swimming, animal contact and outdoor activities and sports in July.