为了解我区健康人群甲型肝炎病毒感染状况，于１９９７年８～１０月进行了调查，结果报告如下。１对象与方法１．１随机分层整群抽取辖区部分医院产房的产妇及新生儿，计免接种点和托幼机构的儿童，中小学校的学生和机关、工厂等单位的０～４０岁健康人群４６０人为调查对... In order to understand the status of hepatitis A virus in healthy people in our district from August to October 1997, the results were reported as follows. 1 objects and methods 1.1 random stratified cluster sampling area maternity and neonatal delivery in some hospital maternity wards, immunization points and nurseries exempted children, primary and secondary school students and institutions, factories and other units of 0 to 40-year-old health 460 people for the investigation of the crowd ...