A Phase IIb, Open-Label, Dose Ranging Study of 13-Valent Pneumococcal Conjugate Vaccine in Adults 55 Through 74 Years of Age Previously Vaccinated With 23-Valent Pneumococcal Polysaccharide Vaccine
A Phase IIb, Open-Label, Dose-Ranging Study of 13-Valent Pneumococcal Conjugate Vaccine in Adults 55 Through 74 Years of Age Previously Vaccinated With 23-Valent Pneumococcal Polysaccharide Vaccine
Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)
This PHASE2 trial investigates Pneumococcal Infection and is currently completed. National Institute of Allergy and Infectious Diseases (NIAID) leads this study, which shows 10 recorded versions since 2012 — indicating substantial longitudinal coverage. Longitudinal tracking of infectious disease trials helps identify durability of treatment effects.
Status Flow
Change History
10 versions recorded-
Sep 2025 — Present [monthly]
Completed PHASE2
-
Sep 2024 — Sep 2025 [monthly]
Completed PHASE2
-
Jul 2024 — Sep 2024 [monthly]
Completed PHASE2
-
Jan 2023 — Jul 2024 [monthly]
Completed PHASE2
-
Dec 2022 — Jan 2023 [monthly]
Completed PHASE2
▶ Show 5 earlier versions
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Jan 2021 — Dec 2022 [monthly]
Completed PHASE2
-
Jun 2018 — Jan 2021 [monthly]
Completed PHASE2
-
May 2017 — Jun 2018 [monthly]
Completed PHASE2
-
Feb 2017 — May 2017 [monthly]
Completed PHASE2
-
Jan 2017 — Feb 2017 [monthly]
Completed PHASE2
First recorded
Oct 2012
Trial started
Per CT.gov start date — pre-dates our first snapshot
Eligibility Summary
No eligibility information available.
Contact Information
- National Institute of Allergy and Infectious Diseases (NIAID)
For direct contact, visit the study record on ClinicalTrials.gov .