Study Evaluating a 13-valent Pneumococcal Conjugate Vaccine in Elderly Subjects
- Conditions
- Vaccines, Pneumococcal Conjugate Vaccine
- Registration Number
- NCT00500357
- Lead Sponsor
- Wyeth is now a wholly owned subsidiary of Pfizer
- Brief Summary
This is a follow-up study to the core study NCT00269672 (6115A1-500). This study will further evaluate the safety, tolerability, and immunogenicity of 13-valent pneumococcal conjugate vaccine (13vPnC) when administered to subjects who have already received one dose of 13vPnC, and one dose of 23-valent pneumococcal polysaccharide vaccine (23vPS) one year later. This study will determine if a subsequent dose of 13vPnC one year later results in similar or greater immune response (body's ability to protect against disease) than that measured after the initial dose of 13vPnC.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 105
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Primary Outcome Measures
Name Time Method Pneumococcal OPA Geometric Mean Titers (GMTs) for the 13 Serotypes 1 Month After 13vPnC / 23vPS / 13vPnC (Vaccination 3) Versus 1 Month After 13vPnC (Vaccination 1) Month 1 / Year 0 (Core study/NCT00269672), Month 1 / Year 2 (Follow-up study/NCT00500357) Antibody geometric mean titers as measured by opsonophagocytic activity (OPA) assay for 13 pneumococcal serotypes (serotypes 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F). Confidence intervals (CI) for the GMTs are back transformations of a CI based on the Student t distribution for the mean logarithm of the titers.
- Secondary Outcome Measures
Name Time Method Pneumococcal OPA Geometric Mean Titers (GMTs) for the 13 Serotypes 1 Month After 13vPnC / 23vPS / 13vPnC (Vaccination 3) Versus 1 Month After 13vPnC / 23vPS (Vaccination 2) Month 1 / Year 1 (Core study/NCT00269672), Month 1 / Year 2 (Follow-up study/NCT00500357) Antibody geometric mean titers as measured by opsonophagocytic activity (OPA) assay for 13 pneumococcal serotypes (serotypes 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F). Confidence intervals (CI) for the GMTs are back transformations of a CI based on the Student t distribution for the mean logarithm of the titers.
Pneumococcal Immunoglobulin G (IgG) Geometric Mean Concentrations (GMCs) for the 13 Serotypes 1 Month After 13vPnC / 23vPS / 13vPnC (Vaccination 3) Versus 1 Month After 13vPnC (Vaccination 1) Month 1 / Year 0 (Core study/NCT00269672), Month 1 / Year 2 (Follow-up study/NCT00500357) Pneumococcal IgG GMCs measured as micrograms per milliliter (mcg/mL) for the 13 pneumococcal serotypes (serotypes 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F). Confidence intervals (CI) for the GMCs are back transformations of a CI based on the Student t distribution for the mean logarithm of the concentrations.
Pneumococcal Immunoglobulin G (IgG) Geometric Mean Concentrations (GMCs) for the 13 Serotypes 1 Month After 13vPnC / 23vPS / 13vPnC (Vaccination 3) Versus 1 Month After 13vPnC / 23vPS (Vaccination 2) Month 1 / Year 1 (Core study/NCT00269672), Month 1 / Year 2 (Follow-up study/NCT00500357) Pneumococcal IgG GMCs measured as micrograms per milliliter (mcg/mL) for the 13 pneumococcal serotypes (serotypes 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F). Confidence intervals (CI) for the GMCs are back transformations of a CI based on the Student t distribution for the mean logarithm of the concentrations.