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一、暴发经过和临床表现:1976年8月3日2时,某校五中队一名学员开始畏寒、发热、腹痛、腹泻,伴有轻度里急后重、恶心,未吐。体温38.2℃。大便镜检红细胞2～5个/高倍,脓细胞3～7个/高倍。随后陆续出现类似病例,3日及4日两天最多,共46名,以后渐少,至9日止7天内共发生74例,发病率高达就餐人员的48.4%。全部病例均有不同程度的腹泻,伴有腹痛(82.4%)、恶心(40.5%)、里急后重(25.7%)、体温升高(24.3%)、腹部压痛(85.1%)。粪便检查可见红、白、脓细胞。29例临床表现较重,22例较轻,23例仅有短
First, after the outbreak and clinical manifestations: at 2:00 on August 3, 1976, a student from a squadron of a school chills, fever, abdominal pain, diarrhea, mild tenesmus, nausea, vomiting. Body temperature 38.2 ℃. Stool microscopic examination of red blood cells 2 to 5 / high, pus 3 to 7 / high times. A series of similar cases followed one after another on the 3rd and 4th days for a maximum of 46 days. Since then, there have been 74 fewer cases within 7 days of the 9th and the incidence rate has risen to 48.4% of the dining staff. All patients had different degrees of diarrhea with abdominal pain (82.4%), nausea (40.5%), tenesmus (25.7%), body temperature (24.3%) and abdominal tenderness (85.1%). Stool examination showed red, white, pus cells. 29 cases of severe clinical manifestations, 22 cases lighter, 23 cases only short