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1991年7月至8月,衡阳县石坳等7个乡镇发生一起稻田型钩端螺旋体(钩体)病爆发流行,现将调查结果报告如下。一、材料与方法:采用病人个案调查、住院病历分析、疫区流行因素调查等方法收集流行病学及临床资料;对患者血清学检测用MAT法测定,第二份血清显凝效价呈4倍增长且效价≥1∶
From July to August 1991, seven outbreaks of Leptospira interrogans (Leptospira) occurred in seven townships including Shi’ao in Hengyang County. The findings are as follows. Materials and Methods: Epidemiological and clinical data were collected by means of patient case investigation, inpatient medical record analysis and endemic factor investigation of epidemic areas. The serum seroconversion rate of patients was measured by the MAT method. The second serum coagulation titer was 4 Multiplier and titer ≥1: