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用酶联免疫吸附试验法对延边地区７０６名农民进行了乙型肝炎病毒感染标志的血清流行病学研究．延边地区７０６名农民的乙型肝炎病毒总感染率为４８．４％．乙型肝炎表面抗原、表面抗体和核心抗体阳性率分别为８．２％，３７．３％和１３．７％．男、女间乙型肝炎病毒总感染率无显著性差异．乙型肝炎病毒表面抗原和核心抗体阳性率在１５～２４岁组达高峰，以后随着年龄的增长而有下降趋势，乙型肝炎病毒表面抗体和乙型肝炎病毒总感染率随着年龄增长而上升．乙型肝炎病毒表面抗原阳性者中３４％ｅ抗原阳性，这部分人群具有较强的传染性．
Serological epidemiological studies on hepatitis B virus infection were performed on 706 peasants in Yanbian using enzyme-linked immunosorbent assay (ELISA). The total infection rate of hepatitis B virus among the farmers in Yanbian area was 48.4%. The positive rates of hepatitis B surface antigen, surface antibody and core antibody were 8.2%, 37.3% and 13.7% respectively. There was no significant difference in the total infection rate of hepatitis B virus among men and women. Hepatitis B virus surface antigen and core antibody positive rate reached the peak in the age group of 15 to 24 years old, and then declined with age, the total hepatitis B virus surface antigen and hepatitis B virus infection rate with age and rise. Hepatitis B virus surface antigen-positive 34% e antigen-positive, this part of the population is highly contagious.