Study Evaluating The Safety, Tolerability And Immunogenicity Of A 13-Valent Pneumococcal Conjugate Vaccine (13vPnC)
A Phase 3, Randomized, Active-Controlled, Modified Double-Blind Trial, Evaluating The Safety, Tolerability And Immunogenicity Of A 13-Valent Pneumococcal Conjugate Vaccine (13vPnC) Compared To A 23-Valent Pneumococcal Polysaccharide (23vPS) Vaccine in Ambulatory Elderly Individuals Aged 70 Years And Older Who Received One Dose of 23vPS At Least 5 Years Prior To Study Enrollment
Sponsor: Wyeth is now a wholly owned subsidiary of Pfizer
Listed as NCT00546572, this PHASE3 trial focuses on Pneumococcal Infections and remains completed. Sponsored by Wyeth is now a wholly owned subsidiary of Pfizer, it has been updated 7 times since 2007, reflecting limited change activity. This study is part of the global effort to build evidence for infectious disease interventions.
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
Nov 2007
Trial started
Per CT.gov start date — pre-dates our first snapshot
Eligibility Summary
No eligibility information available.
Contact Information
- Wyeth is now a wholly owned subsidiary of Pfizer
For direct contact, visit the study record on ClinicalTrials.gov .