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驻京某部幼儿园于1981年12月,突然发生23名急性病毒性肝炎,先后13例患儿住该部某医院传染科,经血清学检测甲型肝炎病毒免疫球蛋白 M 抗体(抗-HAV IgM)阳性,证实为病毒性甲型肝炎(下称甲肝)爆发流行。现将调查结果报告如下。流行情况(一)一般情况:该部幼儿园位于北京某公园西北角。幼儿园分前后两幢房子,前幢是大班、小1班和小2班;后幢是小3班、中1班和中2班。6个班共有儿童173人。该园是全托,每周接送1次。除该部家属儿童外,还有其他部队和少数地方的儿童。工作人员及家属住另一院。园内儿童近期未作任
A kindergarten in a certain department in Beijing in December 1981 suddenly developed 23 cases of acute viral hepatitis. Thirteen children were admitted to the infectious disease department of a certain hospital in that ministry and serological tests were performed to detect the presence of hepatitis A virus immunoglobulin M antibody (anti-HAV IgM) positive, confirmed as viral hepatitis A (hepatitis A) outbreak. The survey results are reported below. Popular (a) general situation: the Ministry of kindergarten is located in a park in Beijing’s northwest corner. Kindergarten points before and after the two houses, before the building is a large class, a small class and small 2 classes; after the small class is 3, 1 class and 2 classes. There are 173 children in 6 classes. The park is full-time, pick up once a week. In addition to children belonging to the family, there are other troops and children in a few places. Staff and their families live in another hospital. Children in the park have not done any work recently