乙肝是当前最主要的传染性疾病之一 ,自 196 3年 HBs Ag被发现以来 ,国内调查 HBV携带率约占人口的 8～ 2 1.4%。据1979年全国抽样调查 2 7万多人口 ,结果为 HBs Ag阳性携带者占调查人口的 8.83% ,比德国的 0 .5～ 1%和其它西欧国家的 1%左右要高得多。医院是乙肝病人和 HBs Ag Hepatitis B is one of the most important infectious diseases at present. Since HBs Ag was discovered in 1936, the domestic HBV carrier rate has been estimated to be 8-2.4% of the population. According to a national sample survey of more than 27,000 people in 1979, the result was that HBsAg-positive carriers accounted for 8.83% of the surveyed population, much higher than 0.5-1% in Germany and about 1% in other Western European countries. The hospital is hepatitis B and HBs Ag