Completed PHASE3 INTERVENTIONAL 2-arm NCT00467519

Safety and Immunogenicity of Tdap Vaccine Compared to DTaP Vaccine in Children 4 to 6 Years of Age

Safety and Immunogenicity of Tdap Vaccine Compared to DTaP Vaccine as Fifth Dose Booster in Children 4 to 6 Years of Age

Sponsor: Sanofi Pasteur, a Sanofi Company

Conditions Diphtheria Pertussis Tetanus

Interventions DTaP (Diphtheria & Tetanus Toxoids & Acellular Pertussis Adsorbed) Tdap (Tetanus Toxoid Reduced Diphtheria Toxoid/Acellular Pertussis)

Updated 7 times since 2017 Last updated: Jan 10, 2014 Started: Apr 30, 2007 Primary completion: Nov 30, 2009 Completion: Dec 31, 2009

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT00467519, this PHASE3 trial focuses on Diphtheria and Pertussis and remains completed. Sponsored by Sanofi Pasteur, a Sanofi Company, it has been updated 7 times since 2007, reflecting limited change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.

Status Flow

Change History

7 versions recorded

Sep 2025 — Present [monthly]

Completed PHASE3
Sep 2024 — Sep 2025 [monthly]

Completed PHASE3
Jul 2024 — Sep 2024 [monthly]

Completed PHASE3
Jan 2021 — Jul 2024 [monthly]

Completed PHASE3
Jun 2018 — Jan 2021 [monthly]

Completed PHASE3

▶ Show 2 earlier versions

Feb 2017 — Jun 2018 [monthly]

Completed PHASE3
Jan 2017 — Feb 2017 [monthly]

Completed PHASE3

First recorded

Apr 2007

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Sanofi Pasteur, a Sanofi Company

Data source: Sanofi

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

Bardstown, United States , Bellevue, United States , Birmingham, United States , Bossier City, United States , Chesapeake, United States , Cleveland, United States , Crestview Hills, United States , Edmonton, Canada , Erie, United States , Fargo, United States and 28 more locations