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ClinicalTrials.gov public records Last synced Oct 17, 2026, 10:03 PM EDT

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Showing 1–24 of 70 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Prevnar 20 Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Pneumococcal Conjugate Vaccination in HIV in Comparison to Polysaccharide Vaccine Boosting

NCT00622843
View directory record Official record
Conditions
HIV Infections, Streptococcus Pneumoniae
Interventions
pneumococcal conjugate vaccine, pneumococcal polysaccharide vaccine
Biological
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2013
U.S. locations
6
States / cities
San Diego, California • Washington D.C., District of Columbia • Tripler AMC, Hawaii + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2025 · Synced Oct 17, 2026, 10:03 PM EDT
Recruiting Phase 4 Interventional

Vaccine Responses in Patients With B Cell Malignancies

NCT05170399
View directory record Official record
Conditions
Lymphoma
Interventions
AREXVY, ABRYSVO, PREVNAR 20, PNEUMOVAX 23, Heplisav -B, PREVNAR 13, Shingrix
Drug · Biological
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 90 Years
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2036
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Study on the Safety of an Investigational Chickenpox Vaccine, When Given to Healthy Children, 12 to 15 Months of Age

NCT06693895
View directory record Official record
Conditions
Chickenpox
Interventions
Investigational varicella vaccine, Marketed varicella vaccine, Measles, mumps, and rubella vaccine, Hepatitis A vaccine, PCV (pneumococcal conjugate vaccine) 13, PCV 20, Vaxneuvance
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Months to 15 Months
Enrollment
750 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
22
States / cities
Phoenix, Arizona • Tucson, Arizona • Huntington Park, California + 18 more
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Assess the Immune Response, the Safety and the Reactogenicity of Respiratory Syncytial Virus (RSV) Prefusion Protein 3 Older Adult (OA) (RSVPreF3 OA) Investigational Vaccine When co Administered With PCV20 in Older Adults

NCT05879107
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
RSVPreF3 OA investigational vaccine, PCV20
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
60 Years and older
Enrollment
1,113 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
20
States / cities
Guntersville, Alabama • Phoenix, Arizona • Huntington Beach, California + 17 more
Source: ClinicalTrials.gov public record
Updated May 18, 2025 · Synced Oct 17, 2026, 10:03 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

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

NCT07086677
View directory record Official record
Conditions
Streptococcus Pneumoniae
Interventions
PG4 vaccine in Buffer 1 with low dose PA-001, PG4 in Buffer 1 with low dose PA-002, PG4 in Buffer 1 with high dose PA-001, PG4 vaccine in Buffer 1 with high dose PA-002, PG4 vaccine in Buffer 2, 20-valent pneumococcal conjugate vaccine, Saline injection
Biological
Lead sponsor
Pfizer
Industry
Eligibility
65 Years to 84 Years
Enrollment
380 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
20
States / cities
Lake Forest, California • Rolling Hills Estates, California • Greenacres City, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine When Given to Healthy Children 12 to 15 Months of Age

NCT06740630
View directory record Official record
Conditions
Chickenpox
Interventions
Investigational varicella vaccine_Lot 1, Investigational varicella vaccine_Lot 2, Investigational varicella vaccine_Lot 3, Marketed varicella vaccine_Lot 1, Marketed varicella vaccine_Lot 2, 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
1,840 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
59
States / cities
Mobile, Alabama • Hot Springs, Arkansas • Sherwood, Arkansas + 50 more
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

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
48
States / cities
Jonesboro, Arkansas • Gardena, California • Los Angeles, California + 39 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study to Learn About the Safety and Immune Response of a New Pneumococcal Vaccine in Adults

NCT06182124
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
Multivalent Pneumococcal Vaccine - Formulation 1, Multivalent Pneumococcal Vaccine - Formulation 2, 20-valent pneumococcal conjugate vaccine (20vPnC), Licensed pneumococcal comparator vaccine, Multivalent Pneumococcal Vaccine - Formulation 3, Multivalent Pneumococcal Vaccine - Formulation 4
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
1,710 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
20
States / cities
Doral, Florida • Hialeah, Florida • Stockbridge, Georgia + 13 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Oct 17, 2026, 10:03 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 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 2, 2021 · Synced Oct 17, 2026, 10:03 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Study to Learn About Safety, Tolerability, and Immune Response of a Catch-up Pneumococcal Vaccine in Children and Adolescents

NCT07660198
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
PG4, 20-valent pneumococcal conjugate vaccine (20vPnC)
Biological
Lead sponsor
Pfizer
Industry
Eligibility
15 Months to 17 Years
Enrollment
1,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
57
States / cities
Birmingham, Alabama • Guntersville, Alabama • Fair Oaks, California + 37 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Active, not recruiting Phase 3 Interventional

Long-term Safety, Tolerability and Effectiveness Study of Ofatumumab in Patients With Relapsing MS

NCT03650114
View directory record Official record
Conditions
Relapsing Multiple Sclerosis
Interventions
Ofatumumab, Tetanus toxoid (TT) containing vaccine (Td, Tdap), 13-valent pneumococcal conjugate vaccine (13-PCV), 23-valent pneumococcal polysaccharide vaccine (23-PPV), Seasonal Quadrivalent influenza vaccine, Keyhole limpet hemocyanin (KLH) neo-antigen
Biological
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
1,882 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
86
States / cities
Birmingham, Alabama • Cullman, Alabama • Phoenix, Arizona + 74 more
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Safety, Tolerability, and Immunogenicity Study of a 31-Valent Pneumococcal Conjugate Vaccine (VAX-31) in Adults

NCT06151288
View directory record Official record
Conditions
Pneumococcal Vaccines
Interventions
31 valent pneumococcal conjugate vaccine, 20 valent pneumococcal conjugate vaccine
Biological
Lead sponsor
Vaxcyte, Inc.
Industry
Eligibility
50 Years and older
Enrollment
1,015 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
25
States / cities
Mobile, Alabama • Phoenix, Arizona • Hollywood, Florida + 22 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2025 · Synced Oct 17, 2026, 10:03 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Safety, Tolerability, and Immunogenicity Study of a 24-Valent Pneumococcal Conjugate Vaccine (VAX-24) in Adults

NCT05266456
View directory record Official record
Conditions
Pneumococcal Vaccines
Interventions
24 valent pneumococcal conjugate vaccine, 20 valent pneumococcal conjugate vaccine
Biological
Lead sponsor
Vaxcyte, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
835 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
13
States / cities
Hollywood, Florida • Sunrise, Florida • Savannah, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2024 · Synced Oct 17, 2026, 10:03 PM EDT
Completed Phase 4 Interventional Results available

A Study of the Effects of RoActemra/Actemra on Vaccination in Patients With Rheumatoid Arthritis on Background Methotrexate (VISARA)

NCT01163747
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
tocilizumab, methotrexate, 23-Valent Pneumococcal Polysaccharide Vaccine, Tetanus Toxoid Adsorbed Vaccine
Biological · Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
47
States / cities
Anniston, Alabama • Birmingham, Alabama • Huntsville, Alabama + 42 more
Source: ClinicalTrials.gov public record
Updated Dec 7, 2012 · Synced Oct 17, 2026, 10:03 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 15, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Recruiting Phase 2 Interventional

Pneumococcal Pneumonia Vaccine Series (PCV20 and PPSV23) in Patients With Chronic Lymphocytic Leukemia Associated Immunodeficiency, PROTECT CLL Trial

NCT05183854
View directory record Official record
Conditions
Chronic Lymphocytic Leukemia, Small Lymphocytic Lymphoma
Interventions
Pneumococcal 20-valent Conjugate Vaccine, Pneumococcal Polyvalent Vaccine
Biological
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 9, 2026 · Synced Oct 17, 2026, 10:03 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 3, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Recruiting No phase listed Observational

A Study to Learn About How 20-Valent Pneumococcal Conjugate Vaccine Works in a Real-world Setting

NCT05452941
View directory record Official record
Conditions
Pneumonia
Interventions
Diagnostic test on urine samples
Diagnostic Test
Lead sponsor
Pfizer
Industry
Eligibility
65 Years and older
Enrollment
12,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
40
States / cities
El Centro, California • Fontana, California • Los Angeles, California + 25 more
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Oct 17, 2026, 10:03 PM 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 8, 2022 · Synced Oct 17, 2026, 10:03 PM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

Study of the Safety of a 21-valent Pneumococcal Conjugate Vaccine in Healthy Infants From Approximately 2 Months of Age

NCT06824194
View directory record Official record
Conditions
Pneumococcal Immunization
Interventions
PCV21 vaccine, Prevnar 20 vaccine, M-M-R II vaccine, Rotarix, RotaTeq, Vaxelis vaccine, Varivax, Priorix, VAQTA, Havrix
Biological
Lead sponsor
Sanofi
Industry
Eligibility
42 Days to 89 Days
Enrollment
2,360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
103
States / cities
Birmingham, Alabama • Guntersville, Alabama • Oneonta, Alabama + 81 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Recruiting Phase 4 Interventional

Genetic Variation in IgG in Alpha 1 Antitrypsin Deficiency

NCT07135427
View directory record Official record
Conditions
Alpha 1-Antitrypsin, COPD, Antibody Deficiency
Interventions
20-valent pneumococcal conjugate vaccine
Biological
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 10, 2025 · Synced Oct 17, 2026, 10:03 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

The Role of Neutrophils in the Age-driven Decline in Anti-pneumococcal Vaccine Responses

NCT06128915
View directory record Official record
Conditions
Aging
Interventions
vaccine
Other
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 3, 2026 · Synced Oct 17, 2026, 10:03 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

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

NCT07629440
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 211 Days
Enrollment
3,230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
106
States / cities
Bessemer, Alabama • Birmingham, Alabama • Centreville, Alabama + 75 more
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 17, 2026, 10:03 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 Feb 1, 2012 · Synced Oct 17, 2026, 10:03 PM EDT