为了解乙肝医源性传播途径和医院消毒措施落实情况,1985年5月对南京市各级和各类医院共13所的外环境、医疗器械和医务人员的手进行抽样调查。以HBsAg作为乙肝病毒污染指标,用ELISA法检测。共检测577份物品和80份手样本。物品样本用混合样本阳性率公式计算。调查结果:1.HBsAg检出率:手10％,外环境2.97％,医疗器械1.83％。外环境中 In order to understand the route of iatrogenic transmission of hepatitis B and the implementation of disinfection measures in hospitals, a sample survey was conducted on the external environment, medical devices and medical personnel of 13 hospitals at all levels and in various hospitals in Nanjing in May 1985. HBsAg as a marker of hepatitis B virus contamination by ELISA assay. A total of 577 items and 80 hand samples were tested. The sample of articles is calculated using the formula of the positive rate of mixed samples. Survey results: 1. HBsAg detection rate: 10% of hands, 2.97% of the external environment, medical equipment 1.83%. Outside the environment