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人群中甲型肝炎抗体(甲肝抗体)的阳性率有明显的地域差别。南斯拉夫萨拉热窝成人中抗体阳性率97％、瑞典成人为37％、美国费城为12％。5岁以内儿童阳性率纽约为0～8.8％、西班牙为98％。墨西哥城多数居民的社会经济状况较低。本文目的确定当地①5岁以内儿童甲肝抗体的阳性率;②连续观察新生儿5个月,了解通过胎盘获得抗体的持续时间;③以出现甲肝抗体特异性IgM证实儿童甲肝的发病率。
The population of hepatitis A antibody (hepatitis A antibody) positive rate of significant geographical differences. In Yugoslavia Sarajevo, the positive rate of antibodies in adults was 97%, that of adults in Sweden was 37%, and that of Philadelphia in the United States was 12%. The positive rate of children within 5 years of age was 0 to 8.8% in New York and 98% in Spain. The majority of Mexico City residents have low socioeconomic status. The purpose of this paper is to determine the local positive rate of hepatitis A antibody in children less than 5 years of age. The continuous observation of newborns for 5 months to understand the duration of antibodies through the placenta. The incidence of hepatitis A in children with confirmed hepatitis A antibody-specific IgM.