Antibody persistence 2 and 3 years after booster vaccination of adolescents with recombinant acellular pertussis monovalent aPgen or combined TdaPgen vaccines

"In summary, new generation recombinant acellular pertussis booster vaccines, available as a pertussis-only and in combination with tetanus and diphtheria, are associated with stabilizing PT antibody responses at levels 2 and 3 years after vaccination that are well above pre-vaccination. It may therefore be expected that the duration of immune protection and hence vaccine effectiveness induced by this new generation recombinant pertussis vaccine is longer than that of currently used chemically detoxified Tdap booster vaccines."