笔者1987年7月至10月对宁蒗彝族自治县五区1镇14个乡37个自然村先后出现大批发热伴肠道症状病人,经流行病学分析、检验证实为一次伤寒暴发流行,共确诊1021例,并对官田乡的575例(发病率25.12％)患者进行调查:这些患者中男266例,女309例,以31—40岁发病率最高,次为21—30岁,各年龄组及男女之间有明显差异(P< From July to October, 1987, a large number of patients with fever and intestinal symptoms appeared in 37 villages in 14 townships of five districts and one town of Ninglang Yi Autonomous County. According to the epidemiological analysis, the epidemic analysis confirmed that it was an epidemic of typhoid fever. A total of 1021 Cases, and 575 cases of Guantian (incidence of 25.12%) were investigated: 266 patients were male and 309 women, the highest incidence of 31-40 years old, followed by 21-30 years old, all age groups There was a significant difference between men and women (P <