为了解内蒙古自治区城镇新生儿乙型肝炎（乙肝）疫苗的接种率及免疫效果，１９９５年４月，采用批质量保证抽样法（ＬＱＡＳ）进行了抽样调查。抽检的２２个城镇中，乙肝疫苗接种率≥８５％的１４个，８０％的４个，７０％的１个，６５％的３个；及时接种率偏低，仅赤峰市的２个区达到８５％。６３３名儿童乙肝疫苗全程３针免疫１个月后采血，放射免疫法测定，ＨＢｓＡｇ阳性率为１９０％，抗－ＨＢｓ阳性率８９２６％，抗－ＨＢｃ阳性率８０６％。说明抗－ＨＢｓ显著上升，ＨＢｓＡｇ和抗－ＨＢｃ明显下降。 In order to understand the inoculation rate and immunization effect of hepatitis B vaccine in newborns in Inner Mongolia Autonomous Region, a sample survey was conducted in April 1995 by batch quality assurance sampling (LQAS). Of the 22 towns sampled, 14, 80%, and 70% of the hepatitis B vaccination rates were 85% and 3, respectively; the timely vaccination rate was low, reaching only 2 districts of Chifeng City 85%. Blood samples were collected from 633 children who received 3 doses of hepatitis B vaccine one month after immunization. The positive rate of HBsAg was 190%, the positive rate of antiHBs was 8926% and the positive rate of antiHBc was 806% by radioimmunoassay. Anti-HBs significantly increased, HBsAg and anti-HBc significantly decreased.