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作者将马尔代夫243名HBsAg阴性母亲所生的新生儿分成三组:第1组103人,于6、10和14周龄时分别接种口服脊髓灰质炎疫苗（OPV）和白喉、破伤风类毒素（DT）各1剂;第2组105人,接种OPV和DT如第1组,另加重组乙型肝炎疫苗（HBV）3剂;第3组35人,单接种3剂HBV。所有观察对象在免疫前及
The authors divided neonates born to 243 HBsAg-negative mothers in the Maldives into three groups: Group 1 of 103 with oral polio vaccine (OPV) and diphtheria, tetanus toxoid DT) in each group. Group 2 received 105 doses of OPV and DT such as group 1 plus 3 doses of recombinant hepatitis B vaccine (HBV); Group 3 received 35 doses of HBV alone. All subjects were immunized before and