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1987年12月6日～1988年元月初,我县云安镇三小发生一起甲肝暴发流行,发病率为26.0％,三(2)班高达39.1％(25/64),患者均按常规方法确诊。现将调查结果报告如下: 流行特点:调查发现该校首例患者在三(2)班,此后以三(2)班为园心向周围班级扩散,且有离该班近者发病率高,远者则低的特点,符合甲肝接触传播的特点。 2 传染源:本次甲肝流行可能与该校门前几个凉面摊点有关,当取消摊点后,发病迅速停止。 3 发病情况:本次甲肝发病率为26.0％(129
From December 6, 1987 to early January 1988, a hepatitis A outbreak occurred in the three small towns of Yunan Town in our county, with a prevalence of 26.0% and 39.1% (25/64) in three (2) classes. All patients were treated according to the conventional method Confirmed. The findings are reported as follows: Characteristics of the epidemic: The survey found that the first patient in the school in three (2) classes, then to three (2) classes as the center of the spread to the surrounding classes, Far is the characteristics of low, in line with the characteristics of hepatitis A transmission. 2 source of infection: the prevalence of hepatitis A may be several stalls in front of the school in front of the school, when canceled stalls, the disease stopped quickly. 3 incidence: The incidence of hepatitis A was 26.0% (129