一、概况该部流行性腹泻的第一次爆发流行在1983年2月10日～3月20日,约39天内发生87例,发病率为117‰。第二次在6月1日～11日的11天内发生107例,发病率为146.6‰。前后两次间隔2个月左右。他们用自给式浅水井,有四个食堂及其家属区。两次爆发流行的病人的症状均以腹泻为主(多者每日20余次,少者3～5次),伴全身乏力、纳差、腹痛、腹泻、呕吐等;未见明显发热。平均潜伏期5.5天,大便镜检与培养 I. Overview The Ministry of epidemic of the first outbreak of epidemic diarrhea in the February 10, 1983 ~ March 20, about 39 days occurred in 87 cases, the incidence was 117 ‰. The second occurred in 11 days from June 1 to November 11, with an incidence of 146.6 ‰. Before and after two intervals of about two months. They use self-contained shallow wells, with four canteens and their families. The two outbreaks of the prevalence of patients with symptoms of diarrhea are mainly (more than 20 times a day, the less 3 to 5 times), with generalized fatigue, anorexia, abdominal pain, diarrhea, vomiting, etc .; no significant fever. The average incubation period of 5.5 days, stool microscopy and culture