Fig. 1

Schemes for vaccination, challenge and assay of study (DTaP = diphtheria-tetanus-acellular pertussis, Tdap = tetanus-reduced dose diphtheria-acellular pertussis)
Schemes for vaccination, challenge and assay of study (DTaP = diphtheria-tetanus-acellular pertussis, Tdap = tetanus-reduced dose diphtheria-acellular pertussis)