Dataset from Phase 1 Extension Study to Evaluate Antibody Persistence Approximately 3 Years After Administration of Different Dosages of Acellular Pertussis or Tetanus-Diphtheria-acellular Pertussis Booster Vaccines in Healthy Adult Subjects Enrolled in Study V113_01

The purpose of this study is to evaluate the persistence of immune response against the three pertussis antigens (anti- pertussis toxoid (PT), anti-filamentous hemagglutinin (FHA) and anti-pertactin (PRN)) in subjects who received a booster dose of either aP or Tdap study vaccines or Boostrix® during V113_01 study.There was only one Clinic Visit at day 1. Eligible subjects went undergo a single blood draw after which they were observed for approximately 15 minutes. Approximately 10.0 mL of blood was withdrawn.No vaccine was administered and no safety data was collected in this study.