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Booster vaccination of toddlers with reduced antigen content diphtheria -- tetanus -- acellular pertussis vaccine

机译:降低抗原含量的白喉患儿加强接种白喉-破伤风-无细胞百日咳疫苗

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摘要

Immunogenicity and reactogenicity of DTPa and reduced antigen dTpa booster vaccines were compared to a hepatitis A control vaccine in DTPa-primed toddlers aged 18 - 20 months. Post-booster, all DTPa and dTpa recipients were seroprotected against diphtheria and tetanus, and > or = 93.3% had a booster response to pertussis. There were similar reactogenicity rates in the DTPa and dTpa vaccine recipients. Few Grade 3 symptoms were reported. Just over one in four children in the control group had diphtheria antibody at or potentially below the correlate of protection benchmark (0.016IU/ml). Larger studies should evaluate potential benefits of reduced antigen vaccines and seroprotection in children who do not receive a booster dose of DTPa at this age, including protection against diphtheria until subsequent booster doses are given.
机译:在18至20个月大的DTPa引发的学步儿童中,将DTPa和降低的抗原dTpa加强疫苗的免疫原性和反应原性与甲型肝炎对照疫苗进行了比较。加强免疫后,所有DTPa和dTpa接受者都获得了白喉和破伤风的血清保护,≥93.3%的人对百日咳有增强反应。 DTPa和dTpa疫苗接种者的反应原率相似。几乎没有3级症状的报道。对照组中有超过四分之一的儿童白喉抗体达到或可能低于保护基准的相关系数(0.016IU / ml)。较大的研究应评估在该年龄没有接受DTPa加强剂量的儿童中,减少抗原疫苗和血清保护的潜在益处,包括对白喉的防护,直到随后给予加强剂量。

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