Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 10, 2026, 4:43 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: PPSV23 Clear all
Completed No phase listed Observational Results available

A Study To Learn About The Effects Of Pneumococcal Vaccine In People With HIV

NCT05794191
View directory record Official record
Conditions
HIV, Pneumonia, Infections, Pneumococcal
Interventions
Vaccine Administration
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
350,399 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 19, 2025 · Synced Sep 10, 2026, 4:43 PM EDT
Completed No phase listed Observational Results available

Vaccine Immune Recovery After Leukemia

NCT05622682
View directory record Official record
Conditions
Acute Lymphoblastic Leukemia, Pediatric
Interventions
Observational only: Serology and flow cytometry for ALL cohort participants, Observational only: Infection rates
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
3 Years to 31 Years
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
6
States / cities
Chicago, Illinois • Grand Rapids, Michigan • Philadelphia, Pennsylvania + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 25, 2026 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of V114 in Healthy Adults (V114-019/PNEU-AGE)

NCT03950622
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
V114, Prevnar 13®
Biological
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
50 Years and older
Enrollment
1,205 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
14
States / cities
Mesa, Arizona • San Diego, California • Hialeah, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 25, 2021 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of the Effect of Pneumococcal Conjugate Vaccine (PCV) on Immunogenicity of Pentacel™

NCT00772928
View directory record Official record
Conditions
Diphtheria, Tetanus, Haemophilus Infection, Pertussis, Polio
Interventions
Pentacel™: HCPDT-IPV//PRP-T Vaccine and Prevnar®
Biological
Lead sponsor
Sanofi
Industry
Eligibility
42 Days to 89 Days
Enrollment
1,167 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2006
U.S. locations
23
States / cities
Montgomery, Alabama • Fayetteville, Arkansas • Jonesboro, Arkansas + 19 more
Source: ClinicalTrials.gov public record
Updated Jan 31, 2012 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Pneumococcal Conjugate Formulations in Healthy Adults 18 Through 49 Years of Age

NCT05489328
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
Candidate-1, Candidate-2, Candidate-3, Candidate-4, Candidate-5, Candidate-6, Candidate Control, 13vPnC, PCV15
Other · Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 49 Years
Enrollment
394 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
18
States / cities
Tustin, California • Walnut Creek, California • Milford, Connecticut + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2024 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety, Tolerability, and Immunogenicity of V114 Followed by PNEUMOVAX™23 in Adults at Increased Risk for Pneumococcal Disease (V114-017/PNEU-DAY)

NCT03547167
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
V114, Prevnar 13™, PNEUMOVAX™23
Biological
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
1,515 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
38
States / cities
Chinle, Arizona • Fort Defiance, Arizona • Glendale, Arizona + 34 more
Source: ClinicalTrials.gov public record
Updated Jan 14, 2021 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Persistent Readiness Through Early Prediction Immunization Study

NCT05346302
View directory record Official record
Conditions
Inflammatory Response
Interventions
Pneumovax 23, Typhim VI, Saline
Drug · Other
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 40 Years
Enrollment
249 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Feb 13, 2023 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Trial to Evaluate the Safety and Immunogenicity of 3 Lots of 20-valent Pneumococcal Conjugate Vaccine in Pneumococcal Vaccine-Naïve Adults

NCT03828617
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
20vPnC, 13vPnC
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 49 Years
Enrollment
1,710 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
21
States / cities
Anaheim, California • Sacramento, California • San Jose, California + 16 more
Source: ClinicalTrials.gov public record
Updated Nov 22, 2020 · Synced Sep 10, 2026, 4:43 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine and a Marketed Measles, Mumps and Rubella Vaccine When Administered as Intramuscular Injection to Healthy Children 12 to 15 Months of Age

NCT06855160
View directory record Official record
Conditions
Chickenpox
Interventions
Candidate varicella vaccine, Marketed varicella vaccine, MMR vaccine, Hepatitis A vaccine, PCV (pneumococcal conjugate vaccine) 13, PCV 20, Vaxneuvance
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Months to 15 Months
Enrollment
911 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
13
States / cities
Tucson, Arizona • Huntington Park, California • Sherman Oaks, California + 10 more
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 3 Interventional Results available

Safety & Immunogenicity of 13vPnC in HIV-Infected Subjects Aged 18 or Older Who Were Previously Immunized With 23vPS

NCT00963235
View directory record Official record
Conditions
HIV Infections, Pneumococcal Infections
Interventions
13-valent pneumococcal conjugate vaccine, Blood draw
Biological · Procedure
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
331 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
15
States / cities
San Francisco, California • Aurora, Colorado • Washington D.C., District of Columbia + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2013 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Effects of Rituximab on Immune Responses in Subjects With Active Rheumatoid Arthritis Receiving Background Methotrexate

NCT00282308
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Rituximab, Methotrexate, Methylprednisone, C. albicans, Tetanus toxoid adsorbed booster vaccine, 23-valent pneumococcal polysaccharide vaccine, Keyhole limpet hemocyanin
Drug · Biological
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
34
States / cities
Birmingham, Alabama • Paradise Valley, Arizona • Peoria, Arizona + 27 more
Source: ClinicalTrials.gov public record
Updated Aug 9, 2017 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of 2 Doses of Menactra®, a Meningococcal Conjugate Vaccine in Healthy Toddlers

NCT00384397
View directory record Official record
Conditions
Meningococcal Meningitis, Measles, Mumps, Rubella, Varicella
Interventions
Meningococcal Polysaccharide Diphtheria Toxoid Conjugate Vaccine, Meningococcal Polysaccharide Diphtheria Toxoid Conjugate
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
249 Days to 305 Days
Enrollment
1,128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
39
States / cities
Montgomery, Alabama • Fayetteville, Arkansas • Jonesboro, Arkansas + 35 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Sep 10, 2026, 4:43 PM EDT
Completed No phase listed Observational

A Study To Examine Serologic Response In Hospitalized Patients Receiving Polyvalent Pneumococcal Vaccine

NCT00955851
View directory record Official record
Conditions
Pneumonia
Interventions
Pre and post vaccination titers
Other
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 29, 2010 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Consistency Study of GlaxoSmithKline (GSK) Biologicals' MMR Vaccine (209762) (Priorix) Comparing Immunogenicity and Safety to Merck & Co., Inc.'s MMR Vaccine (M-M-R II), in Children 12 to 15 Months of Age

NCT01702428
View directory record Official record
Conditions
Rubella, Measles, Mumps
Interventions
Priorix, M-M-R II, Varivax, Havrix, Prevnar 13
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Months to 15 Months
Enrollment
5,016 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
62
States / cities
Dothan, Alabama • Phoenix, Arizona • Fayetteville, Arkansas + 56 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2019 · Synced Sep 10, 2026, 4:43 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Lot-to-lot Consistency Study of a 21-valent Pneumococcal Conjugate Vaccine in Healthy Infants From 2 Months of Age

NCT07348692
View directory record Official record
Conditions
Pneumococcal Immunization, Healthy Volunteers
Interventions
PCV21 vaccine, 20vPCV licensed vaccine
Biological
Lead sponsor
Sanofi
Industry
Eligibility
42 Days to 89 Days
Enrollment
2,195 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
13
States / cities
Fayetteville, Arkansas • Huntington Park, California • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study Comparing a 13-valent Pneumococcal Conjugate Vaccine With 23-valent Pneumococcal Polysaccharide Vaccine in Adults

NCT00427895
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
13-valent pneumococcal conjugate vaccine (13vPnC), 23-valent Pneumococcal Polysaccharide Vaccine (23vPS)
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 64 Years
Enrollment
2,141 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
26
States / cities
Huntsville, Alabama • Chandler, Arizona • Phoenix, Arizona + 19 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2021 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Dendritic Cell Therapy, Cryosurgery, and Pembrolizumab in Treating Patients With Non-Hodgkin Lymphoma

NCT03035331
View directory record Official record
Conditions
Aggressive Non-Hodgkin Lymphoma, Indolent Non-Hodgkin Lymphoma, Recurrent Diffuse Large B-Cell Lymphoma, Recurrent Follicular Lymphoma, Recurrent Mantle Cell Lymphoma, Recurrent Marginal Zone Lymphoma, Recurrent Non-Hodgkin Lymphoma, Recurrent Primary Mediastinal (Thymic) Large B-Cell Lymphoma, Recurrent T-Cell Non-Hodgkin Lymphoma, Small Lymphocytic Lymphoma
Interventions
Cryosurgery, Dendritic Cell Therapy, Laboratory Biomarker Analysis, Pembrolizumab, Pneumococcal 13-valent Conjugate Vaccine, Quality-of-Life Assessment
Procedure · Biological · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Prospective Trial of Vaccine Responses Against Pneumococcus and Influenza in Adult Cancer Patients 65 Years of Age and Older

NCT00741039
View directory record Official record
Conditions
Breast Cancer, Lung Cancer, Prostate Cancer
Interventions
inactivated influenza vaccine and the 23- valent pneumococcal vaccine, inactivated influenza vaccine and the PPV23 vaccine (Pneumovax)
Biological
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
65 Years and older
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 19, 2015 · Synced Sep 10, 2026, 4:43 PM EDT
Terminated Phase 2 Interventional Results available

Lenalidomide in Improving Immune Response to Vaccine Therapy in Patients With Chronic Lymphocytic Leukemia, Small Lymphocytic Lymphoma, or Monoclonal B Cell Lymphocytosis

NCT02309515
View directory record Official record
Conditions
Monoclonal B-Cell Lymphocytosis, Stage 0 Chronic Lymphocytic Leukemia, Stage I Chronic Lymphocytic Leukemia, Stage I Small Lymphocytic Lymphoma
Interventions
Laboratory Biomarker Analysis, Lenalidomide, Pneumococcal 13-valent Conjugate Vaccine
Other · Drug · Biological
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
3
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 18, 2021 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

20-valent Pneumococcal Conjugate Vaccine Safety Study in Healthy Infants

NCT04379713
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
20-valent pneumococcal conjugate vaccine, 13-valent pneumococcal conjugate vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
42 Days to 98 Days
Enrollment
1,511 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
41
States / cities
Tucson, Arizona • Fullerton, California • Oxnard, California + 33 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2023 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study Evaluating Serum Collected From Healthy Adults For Development of Pneumococcal Opsonophagocytic Assay

NCT00508950
View directory record Official record
Conditions
Healthy
Interventions
Large volume blood draw
Procedure
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 70 Years
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2016
U.S. locations
1
States / cities
Secaucus, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 16, 2016 · Synced Sep 10, 2026, 4:43 PM EDT
Terminated Phase 2 Interventional Results available

Allogeneic Myeloma GM-CSF Vaccine With Lenalidomide in Multiple Myeloma Patients in Complete or Near Complete Remission

NCT03376477
View directory record Official record
Conditions
Multiple Myeloma
Interventions
GM-CSF vaccine, Lenalidomide, Prevnar13, Placebo Prevnar13, Placebo GM-CSF Vaccine
Biological · Drug · Other
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Sep 10, 2026, 4:43 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Postlicensure Observational Safety Study of 13vPnC Administered to Infants and Toddlers

NCT01128426
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
No Intervention
Other
Lead sponsor
Pfizer
Industry
Eligibility
2 Months to 3 Years
Enrollment
53,902 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Jul 13, 2014 · Synced Sep 10, 2026, 4:43 PM EDT
Completed Phase 1Phase 2 Interventional

Chemotherapy and Peripheral Stem Cell Transplantation Followed By Immunotherapy in Treating Patients With Multiple Myeloma

NCT00046852
View directory record Official record
Conditions
Infection, Multiple Myeloma and Plasma Cell Neoplasm
Interventions
filgrastim, pneumococcal polyvalent vaccine, therapeutic autologous lymphocytes, therapeutic tumor infiltrating lymphocytes, carmustine, cyclophosphamide, melphalan, bone marrow ablation with stem cell support, peripheral blood stem cell transplantation
Biological · Drug · Procedure
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2008
U.S. locations
2
States / cities
Baltimore, Maryland • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 3, 2019 · Synced Sep 10, 2026, 4:43 PM EDT