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1978年8月至1981年7月我们对城乡两托儿所7岁以下健康儿童341名,作了血清学HBsAg 测定和随访。1979年8月采用放射免疫对流电泳(IRA-CEP)法,1981年7月用反相血凝(R-PHA)法测定。结果总检出HBsAg 阳性42名(12.32%)。农村组1979年阳性率11.29(14/124),未作隔离和处理,1981年再次检查阳性率19.83%(23/114)。城市组1981年阳性率
From August 1978 to July 1981, we conducted serological HBsAg determinations and follow-up of 341 healthy children under 7 years old in both urban and rural nurseries. 1979 August 1979 by radioimmunoassay (IRA-CEP) method, July 1981 by reverse phase hemagglutination (R-PHA) method. Results A total of 42 HBsAg positive patients (12.32%) were detected. In rural areas, the positive rate in 1979 was 11.29 (14/124), without isolation and treatment. In 1981, the positive rate was again checked by 19.83% (23/114). City group positive rate in 1981