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本课题对１９９１～１９９６年ＨＢｓＡｇ阳性阴性母亲的儿童接种儿童乙肝疫苗后，通过流行病学血清学调查，了解１～６岁儿童ＨＢｓＡｇ携带的状况，探索人群乙肝的主要传播因素（母婴传播、医源性传播），并应用群组研究方法评价乙肝疫苗的免疫效果。对象和方法（１）１...
This issue of children from 1991 to 1996 HBsAg-negative mothers vaccinated children with hepatitis B vaccine, through epidemiological serological investigation to understand the status of HBsAg in children aged 1 to 6 years to explore the main population of hepatitis B transmission factors (mother-to-child transmission, Iatrogenic transmission), and the use of group research methods to evaluate the immune effect of hepatitis B vaccine. Objects and methods (1) 1 ...