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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Infections, Pneumococcal Clear all
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 Sep 26, 2026, 7:41 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety of GlaxoSmithKline Biologicals' MMRV Vaccine vs. ProQuad® in Children 12-14 Months of Age

NCT00578175
View directory record Official record
Conditions
Varicella, Rubella, Mumps, Measles
Interventions
Priorix-Tetra™ (MMRV vaccine 208136), ProQuad®, Havrix®, Prevnar®
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Months to 14 Months
Enrollment
1,851 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
141
States / cities
Birmingham, Alabama • Tuscaloosa, Alabama • Phoenix, Arizona + 125 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2018 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of V116 in Pneumococcal Vaccine-naïve Adults (V116-003, STRIDE-3)

NCT05425732
View directory record Official record
Conditions
Pneumococcal Infection
Interventions
V116, PCV20
Biological
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
2,663 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
60
States / cities
Birmingham, Alabama • Glendale, Arizona • Mesa, Arizona + 52 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2024 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety of Pediatric Vaccines When Administered With Menactra® in Healthy Toddlers

NCT00422292
View directory record Official record
Conditions
Meningococcal Meningitis, Measles, Mumps, Rubella, Varicella
Interventions
Meningococcal Polysaccharide Diphtheria Conjugate Vaccine, Measles, Mumps, Rubella and Varicella
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
9 Months to 12 Months
Enrollment
1,664 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
87
States / cities
Tuscaloosa, Alabama • Tucson, Arizona • Jonesboro, Arkansas + 74 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Tolerability of V114 and Prevnar 13™ in Healthy Infants (V114-031/PNEU-LINK)

NCT03692871
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
V114, Prevnar 13™
Biological
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
42 Days to 90 Days
Enrollment
2,409 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
22
States / cities
Downey, California • Huntington Beach, California • San Diego, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2023 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Enhancing a Sustainable Pharmacy-based Immunization Program in Two States

NCT02615470
View directory record Official record
Conditions
Herpes Zoster, Pneumococcal Infections
Interventions
Enhanced immunization delivery model, Immunization update
Behavioral · Other
Lead sponsor
Auburn University
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
2
States / cities
Auburn, Alabama • Claremont, California
Source: ClinicalTrials.gov public record
Updated Aug 19, 2019 · Synced Sep 26, 2026, 7:41 PM EDT
Completed No phase listed Observational

Study Estimating the Impact of Prevnar 13™ (13vPnC) on Invasive Pneumococcal Disease

NCT01128439
View directory record Official record
Conditions
Invasive Pneumococcal Disease
Interventions
No intervention
Other
Lead sponsor
Pfizer
Industry
Eligibility
Not listed
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Dec 3, 2018 · Synced Sep 26, 2026, 7:41 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Study to Learn About the Safety of an Expanded Pneumococcal Vaccine in Healthy Infants

NCT07573462
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
PG4, 20-valent pneumococcal conjugate vaccine (20vPnC)
Biological
Lead sponsor
Pfizer
Industry
Eligibility
42 Days to 98 Days
Enrollment
2,400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
23
States / cities
Estero, Florida • Fort Lauderdale, Florida • Fort Myers, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study to Learn About How a New Pneumococcal Vaccine Works in Children

NCT06531538
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
PG4, 20-valent pneumococcal conjugate vaccine (20vPnC)
Biological
Lead sponsor
Pfizer
Industry
Eligibility
12 Months to 15 Months
Enrollment
225 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
35
States / cities
Washington D.C., District of Columbia • Miami, Florida • Chamblee, Georgia + 18 more
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Sep 26, 2026, 7:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Immunogenicity of PCV-7 Vaccine in VLBW Infants

NCT00273325
View directory record Official record
Conditions
Pneumococcal Infections, Streptococcus Pneumoniae, Infant, Newborn, Infant, Low Birth Weight, Infant, Small for Gestational Age, Infant, Premature
Interventions
Not listed
Lead sponsor
NICHD Neonatal Research Network
Network
Eligibility
Up to 3 Months
Enrollment
368 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
10
States / cities
Birmingham, Alabama • Palo Alto, California • Miami, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 21, 2019 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

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

NCT01654263
View directory record Official record
Conditions
Pneumococcal Infection
Interventions
Pneumococcal 13-valent Conjugate Vaccine [Diphtheria CRM197 Protein]
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
55 Years to 74 Years
Enrollment
884 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
7
States / cities
Decatur, Georgia • Iowa City, Iowa • St Louis, Missouri + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2017 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Not applicable Interventional

Pneumonia Vaccine Education Intervention Study

NCT06136832
View directory record Official record
Conditions
Pneumonia, Pneumococcal, Vaccine
Interventions
Pneumococcal Vaccine Education
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years to 64 Years
Enrollment
141 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Wilkes-Barre, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 7, 2025 · Synced Sep 26, 2026, 7:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Long-term Impact of Pneumococcal Conjugate Vaccine on Carriage

NCT00294021
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
Not listed
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
Not listed
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Chinle, Fort Defiance, Whiteriver, AZ; Gallup, Shiprock, NM, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 25, 2012 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Phase 3 Interventional Results available

Comparative Study of Ceftaroline vs. Ceftriaxone in Adult Subjects With Community-Acquired Pneumonia

NCT00621504
View directory record Official record
Conditions
Bacterial Pneumonia
Interventions
Ceftaroline fosamil for Injection, IV Ceftriaxone, Placebo, Clarithromycin
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years and older
Enrollment
606 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
12
States / cities
Los Angeles, California • Pasadena, California • Sacramento, California + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Sep 26, 2026, 7:41 PM 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 Sep 26, 2026, 7:41 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pneumococcal Reference Standard

NCT00479323
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
Pneumovax 23
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Dec 25, 2016 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Trial to Evaluate the Safety and Immunogenicity of a 20-valent Pneumococcal Conjugate Vaccine in Pneumococcal Vaccine-naïve Adults

NCT03760146
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
20vPnC, 13vPnC, PPSV23, Saline
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
3,902 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
61
States / cities
Birmingham, Alabama • Mobile, Alabama • Chandler, Arizona + 45 more
Source: ClinicalTrials.gov public record
Updated Dec 1, 2021 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Safety, Tolerability and Immunogenicity of ASP3772, a Pneumococcal Vaccine, in Toddlers 12 to 15 Months of Age in Comparison to an Active Comparator

NCT04525599
View directory record Official record
Conditions
Healthy Volunteers, Pneumococcal Disease
Interventions
ASP3772, PCV13
Biological
Lead sponsor
Affinivax, Inc.
Industry
Eligibility
12 Months to 15 Months
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
17
States / cities
Bryant, Arkansas • Jonesboro, Arkansas • Anaheim, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2022 · Synced Sep 26, 2026, 7:41 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 26, 2026, 7:41 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Trial To Evaluate A Multivalent Pneumococcal Conjugate Vaccine In Healthy Adults 50-85 Years Of Age

NCT03313050
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
Multivalent, Tdap, polysaccharide
Biological
Lead sponsor
Pfizer
Industry
Eligibility
50 Years to 85 Years
Enrollment
511 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
18
States / cities
Birmingham, Alabama • Cerritos, California • Savannah, Georgia + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2020 · Synced Sep 26, 2026, 7:41 PM EDT
Completed Phase 2 Interventional Results available

Immuno-Augmentation With GM-CSF of Pneumococcal Vaccine in Chronic Lymphocytic Leukemia Patients

NCT00323557
View directory record Official record
Conditions
Leukemia
Interventions
Sargramostim (GM-CSF), Pneumococcal Vaccine
Drug · Biological
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 4, 2012 · Synced Sep 26, 2026, 7:41 PM EDT
Terminated No phase listed Observational

MISP 60528 Pneumococcal Vaccination

NCT04845945
View directory record Official record
Conditions
Heart Transplant Infection Prevention
Interventions
PCV15
Biological
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Timeline
2021 – 2024
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced Sep 26, 2026, 7:41 PM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

A Study to Learn About How a New Pneumococcal Vaccine Works in Infants

NCT06524414
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
PG4, 20-valent pneumococcal conjugate vaccine (20vPnC), 15-valent pneumococcal conjugate vaccine (PCV15)
Biological
Lead sponsor
Pfizer
Industry
Eligibility
42 Days to 98 Days
Enrollment
605 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
61
States / cities
Fayetteville, Arkansas • Jonesboro, Arkansas • La Puente, California + 39 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 26, 2026, 7:41 PM EDT
Active, not recruiting Not applicable Interventional

Pneumococcal Conjugate Vaccine 13 (Prevnar13®) in Children Who Are Solid Organ Transplant Recipients (SOT)

NCT01527591
View directory record Official record
Conditions
Infection in Solid Organ Transplant Recipients
Interventions
Pneumococcal Conjugate Vaccine 13 (PCV13)
Biological
Lead sponsor
University of California, Los Angeles
Other
Eligibility
12 Months to 59 Months
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 1, 2025 · Synced Sep 26, 2026, 7:41 PM EDT