从1977年以来在五个地(市)城、乡累计6000多人的调查证实西藏为乙型肝炎的高流行区。在全区五个地区8个县(市)中,随机抽样调查3968人的结果;HBsAg阳性率15.50%,其中现患病人占73.7%,临床类型78.28%为急性无黄疸型,19.44%为慢性迁延型,2.26%为慢性活动型。患病情况城镇较重,现患率6.35%。HBsAg阳性率农牧区最高为19.10%;职业阳性率农牧民最高分别为19.39%,22.22 A survey of more than 6,000 people in five prefectures (cities) and townships since 1977 confirmed that Tibet is a high endemic area of ​​hepatitis B. Among 8 counties (cities) in 5 districts and 5 districts in the whole region, 3968 people were randomly sampled. The positive rate of HBsAg was 15.50%, of which 73.7% were patients. The clinical type was 78.28% without acute jaundice and 19.44% Chronic persistent type, 2.26% of chronic active type. The prevalence of urban heavier, the prevalence of 6.35%. The highest positive rate of HBsAg was 19.10% in farming and pastoral areas; the highest rate of occupational positive rate was 19.39%, 22.22