甲型病毒性肝炎（甲肝）目前仍是严重危害人民健康的常见病。我国甲肝感染率平均为７１％，本地区大样本多年龄组甲肝血清学调查研究目前仍为空白。为搞清我区正常人群中男、女及各年龄组城乡甲肝感染情况，制定防治措施，特开展此项调查研究。１对象及方法１．１调查对象... Hepatitis A (Hepatitis A) is still a common disease that is seriously harmful to people’s health. In our country, the average infection rate of hepatitis A is 71%. The investigation of hepatitis A in many large samples in this area is still blank at present. In order to find out the normal population of our region, male and female, and urban and rural hepatitis A infection in various age groups, to develop prevention and treatment measures, especially to carry out the investigation. 1 objects and methods 1.1 survey ...