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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Pneumococcal Infection Clear all
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 Healthy Adults 50 Years of Age or Older (V114-016/PNEU-PATH)

NCT03480763
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
V114, Prevnar 13™, PNEUMOVAX™23
Biological
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
50 Years and older
Enrollment
652 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
15
States / cities
Chandler, Arizona • Phoenix, Arizona • Spring Valley, California + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Not applicable Interventional

Immune System Function Following Vaccination in HIV Infected Children Taking Anti-HIV Drugs

NCT00257127
View directory record Official record
Conditions
HIV Infections
Interventions
Pneumococcal 7-valent conjugate vaccine, Pneumococcal polysaccharide vaccine, Hepatitis B vaccine, Measles, mumps, and rubella virus vaccine, live
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Years to 23 Years
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
24
States / cities
Birmingham, Alabama • Alhambra, California • Long Beach, California + 17 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety, Tolerability, and Immunogenicity of V116 in Pneumococcal Vaccine-experienced Adults (V116-006, STRIDE-6)

NCT05420961
View directory record Official record
Conditions
Pneumonia, Pneumococcal
Interventions
V116, PCV15, PPSV23
Biological
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
50 Years and older
Enrollment
717 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
15
States / cities
Birmingham, Alabama • Glendale, Arizona • Tempe, Arizona + 12 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2024 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Phase 4 Interventional Results available

Assessing the Use of Certolizumab Pegol in Adult Subjects With Rheumatoid Arthritis on the Antibody Response When Receiving Influenza Virus and Pneumococcal Vaccines

NCT00993668
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Placebo, Certolizumab pegol
Other · Biological
Lead sponsor
UCB Pharma
Industry
Eligibility
18 Years and older
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
41
States / cities
Birmingham, Alabama • Huntsville, Alabama • Tuscaloosa, Alabama + 38 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2018 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Study Evaluating Pneumococcal Vaccine in Healthy Infants

NCT00205803
View directory record Official record
Conditions
Healthy Subjects, Pneumococcal Infections
Interventions
13-Valent Pneumococcal Conjugate Vaccine (13vPnC), 7-Valent Pneumococcal Conjugate Vaccine (7vPnC)
Biological
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
42 Days to 98 Days
Enrollment
249 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 14, 2012 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Impact and Cost of a Pharmacist Pneumococcal Vaccination Program With PNEUMOVAX® 23 at an Urban Senior Center

NCT01944462
View directory record Official record
Conditions
Study is Open to Seniors Age 50 or Older
Interventions
Pharmacist Pneumococcal Vaccine Program (PPVP)
Behavioral
Lead sponsor
Thomas Jefferson University
Other
Eligibility
50 Years and older
Enrollment
203 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 2, 2018 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Trial to Evaluate the Safety and Immunogenicity of a Multivalent Pneumococcal Vaccine in Healthy Infants

NCT03512288
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
Multivalent, 13vPnC
Biological
Lead sponsor
Pfizer
Industry
Eligibility
42 Days to 98 Days
Enrollment
460 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
39
States / cities
Fayetteville, Arkansas • Downey, California • Huntington Beach, California + 29 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2021 · Synced Jul 23, 2026, 6:21 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Aerosolized and Intravenous Colistin in Healthy Adults

NCT01863719
View directory record Official record
Conditions
Pathogen Resistance, Pneumococcal Infection, Pneumonia
Interventions
Colistimethate sodium
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
2
States / cities
Baltimore, Maryland • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 1, 2020 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Phase 2 Study to Evaluate the Safety, Tolerability, and Immune Response of AFX3772 Vaccine in Healthy Infants

NCT05412030
View directory record Official record
Conditions
Pneumonia, Bacterial, Pneumococcal Infections, Pneumonia, Pneumococcal
Interventions
AFX3772, Prevnar 13, Prevnar 20
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
42 Days to 90 Days
Enrollment
388 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
42
States / cities
Jonesboro, Arkansas • Los Angeles, California • Miami, Florida + 35 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Jul 23, 2026, 6:21 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate Tolerability, Safety and Immunogenicity of MVX01 Pneumococcal Vaccine

NCT06337643
View directory record Official record
Conditions
Pneumococcal Vaccine
Interventions
MVX01, MVX01 Placebo
Biological
Lead sponsor
Matrivax Research and Development Corporation
Industry
Eligibility
18 Years to 75 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
2
States / cities
Savannah, Georgia • Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 28, 2024 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Text Message-Based Nudges Prior to Primary Care Visits to Increase Care Gap Closure

NCT05799976
View directory record Official record
Conditions
Pneumonia, Pneumococcal, Diabetes Mellitus, Breast Cancer, Colorectal Cancer
Interventions
Text message nudge
Behavioral
Lead sponsor
Mitesh Patel
Industry
Eligibility
18 Years and older
Enrollment
29,334 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 24, 2024 · Synced Jul 23, 2026, 6:21 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

Safety, Tolerability, and Immunogenicity of VAX-31 in Adults ≥50 Years With Immunobridging to Adults 18-49

NCT07284654
View directory record Official record
Conditions
Pneumococcal Vaccines
Interventions
31 valent pneumococcal conjugate vaccine, PCV20, PCV21
Biological
Lead sponsor
Vaxcyte, Inc.
Industry
Eligibility
18 Years and older
Enrollment
4,049 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
30
States / cities
Birmingham, Alabama • Chinle, Arizona • Whiteriver, Arizona + 27 more
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Jul 23, 2026, 6:21 AM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

A Clinical Study to Evaluate the Safety, Tolerability, and Immunogenicity of VAX-31 in Healthy Infants

NCT06720038
View directory record Official record
Conditions
Pneumococcal Vaccines
Interventions
0.5 mL of the low dose VAX-31, 0.5 mL of the mid dose VAX-31, 0.5 mL of the high dose VAX-31, 0.5 mL dose of PCV20, 0.5 mL of the High-PFS dose VAX-31
Biological
Lead sponsor
Vaxcyte, Inc.
Industry
Eligibility
42 Days to 89 Days
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
45
States / cities
Jonesboro, Arkansas • Gardena, California • Los Angeles, California + 32 more
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Jul 23, 2026, 6:21 AM 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 Jul 23, 2026, 6:21 AM EDT
Completed Not applicable Interventional Results available

Immune Responses to Pneumococcal Vaccination Among HIV-infected Subjects

NCT00706550
View directory record Official record
Conditions
HIV Infections
Interventions
(PV) 23-valent pneumococcal polysaccharide vaccine, Placebo
Biological
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
107 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 23, 2014 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Immunogenicity and Reactogenicity of Pneumococcal Polysaccharide and Conjugate Vaccines in Native Elders

NCT00153543
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
PCV7 + PPV23, 2 months, PCV7 + PPV23, 6 months
Biological
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
55 Years to 70 Years
Enrollment
86 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2003
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Sep 30, 2024 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety, Tolerability, and Immunogenicity of V110 or V114 Co-administered With a Booster Dose of mRNA-1273 in Healthy Adults (V110-911)

NCT05158140
View directory record Official record
Conditions
Pneumococcal Infection
Interventions
V110, V114, mRNA-1273, Placebo for V110, Placebo for V114
Biological
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
50 Years and older
Enrollment
850 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
42
States / cities
North Hollywood, California • Northridge, California • Paramount, California + 38 more
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced Jul 23, 2026, 6:21 AM 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 Jul 23, 2026, 6:21 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of 20vPnC Coadministered With SIIV in Adults ≥65 Years of Age

NCT04526574
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
Experimental 20-valent pneumococcal conjugate vaccine (20vPnC), Saline, Influenza vaccine
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
65 Years and older
Enrollment
1,796 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
63
States / cities
Mobile, Alabama • Chandler, Arizona • Phoenix, Arizona + 53 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2022 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Phase 4 Interventional

Humoral Determinants of Immunity to Pneumococcal Infection

NCT00304382
View directory record Official record
Conditions
Pneumonia, Pneumococcal Infections, Infections, Streptococcus Pneumoniae
Interventions
Prevnar, Pneumovax
Biological
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
Not listed
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 4, 2017 · Synced Jul 23, 2026, 6:21 AM 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 Jul 23, 2026, 6:21 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

20-valent Pneumococcal Conjugate Vaccine Safety and Immunogenicity Study of a 4-Dose Series in Healthy Infants

NCT04382326
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
1,997 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
105
States / cities
Birmingham, Alabama • Dothan, Alabama • Phoenix, Arizona + 78 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2023 · Synced Jul 23, 2026, 6:21 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Pneumonia Vaccine in Aging HIV Positive Individuals

NCT02558751
View directory record Official record
Conditions
Pneumococcal Infection
Interventions
23-valent pneumococcal polysaccharide vaccine, 13-valent pneumococcal conjugate vaccine
Biological
Lead sponsor
University of Toledo Health Science Campus
Other
Eligibility
50 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Toledo, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 23, 2015 · Synced Jul 23, 2026, 6:21 AM 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 Jul 23, 2026, 6:21 AM EDT