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1980年8～9月,某步校发生了1次肝炎流行,多数病人有黄疸。经过调查,确认为甲型肝炎。主要原因是下雨污染了井水。为了吸取教训,现报道如下。一、流行情况1.发病率:该校分机关各部、学员各队、校直各分队及农场,共23个伙食单位。从8月6日到9月23日,46天中共确诊肝炎67例,发病率为13.6‰。2.发病特点:疫情来势突然,发病几乎在5～6个单位同时开始,终成全校性散
From August to September 1980, a hepatitis epidemic occurred in a certain school. Most patients had jaundice. After investigation, confirmed as hepatitis. The main reason is that rain polluted well water. In order to learn the lesson, it is reported below. First, the prevalence 1. Incidence: The school branch offices, students teams, straighten out the units and farms, a total of 23 food units. From Aug. 6 to Sept. 23, 67 cases of hepatitis were diagnosed in 46 days, the incidence was 13.6 ‰. 2 incidence characteristics: a sudden outbreak of the epidemic, the incidence of almost 5 to 6 units at the same time, eventually became the school scattered