作者在先前接种过 4剂 DTP的 4～ 6岁儿童中比较了接种第 5剂百日咳无细胞菌苗DTP( DTPa)和百日咳全细胞菌苗 DTP( DTPw)后的菌苗相关不良反应和加强应答。　　 36 6名分别在 2、4、6和 17～ 19月龄接种过 4剂百日咳无细胞或全细胞菌苗的 4～6岁儿童随机接受第 5剂 DTPa或 DTPw The authors compared vaccine-associated adverse reactions and boosting responses after inoculation of the fifth dose of pertussis acellular vaccine DTP (DTPa) and B. pertussis whole-cell vaccine DTP (DTPw) in children aged 4 to 6 years who had previously received 4 doses of DTP . Thirty-six children aged 4 to 6 years, who received 4 doses of pertussis cell-free or whole-cell vaccine at 2, 4, 6, and 17 to 19 months of age, were randomized to receive either a fifth dose of DTPa or DTPw