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ClinicalTrials.gov public records Last synced May 22, 2026, 3:47 AM 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.
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Filters: Condition: Pneumococcal Infections Clear all
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
HIV-1-infection, Human Immunodeficiency Virus, HIV/AIDS, HIV Infections
Interventions
Prevnar-13
Biological
Lead sponsor
VA Eastern Colorado Health Care System
Federal
Eligibility
21 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2028
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 14, 2024 · Synced May 22, 2026, 3:47 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Smokers, Elderly, Asthma, COPD, Recurrent Infections
Interventions
PPV-23
Biological
Lead sponsor
National Jewish Health
Other
Eligibility
19 Years to 80 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 13, 2017 · Synced May 22, 2026, 3:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
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 May 22, 2026, 3:47 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
Multivalent, Prevnar 13
Biological
Lead sponsor
Pfizer
Industry
Eligibility
42 Days to 98 Days
Enrollment
565 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
48
States / cities
Mobile, Alabama • Harrisburg, Arkansas • Anaheim, California + 34 more
Source: ClinicalTrials.gov public record
Updated Nov 29, 2021 · Synced May 22, 2026, 3:47 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
PREVENTION OF INVASIVE PNEUMOCOCCAL DISEASE
Interventions
13-valent pneumococcal conjugate vaccine, Seasonal Inactivated Influenza Vaccine, Placebo
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
50 Years and older
Enrollment
882 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
44
States / cities
Birmingham, Alabama • Huntsville, Alabama • Scottsdale, Arizona + 37 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2016 · Synced May 22, 2026, 3:47 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
Low dose multivalent pneumococcal conjugate vaccine formulation A, Low dose multivalent pneumococcal conjugate vaccine formulation B, Low dose of multivalent pneumococcal conjugate vaccine control, Standard dose multivalent pneumococcal conjugate vaccine control
Other · Biological
Lead sponsor
Pfizer
Industry
Eligibility
50 Years to 64 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
9
States / cities
Hialeah, Florida • Hollywood, Florida • Columbia, Maryland + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2024 · Synced May 22, 2026, 3:47 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pneumococcal Vaccines
Interventions
0.5 ml dose of 1.1 mcg VAX-24, 0.5 ml dose of PCV20, 0.5 ml dose of 2.2 mcg VAX-24, 0.5 ml dose of 2.2/4.4 mcg VAX-24
Biological
Lead sponsor
Vaxcyte, Inc.
Industry
Eligibility
42 Days to 89 Days
Enrollment
802 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
32
States / cities
Jonesboro, Arkansas • Madera, California • Tampa, Florida + 22 more
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced May 22, 2026, 3:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
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 May 22, 2026, 3:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
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 May 22, 2026, 3:47 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
HIV Infections
Interventions
Interleukin-2
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
620 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 20, 2013 · Synced May 22, 2026, 3:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive, Pneumonia, Bacterial
Interventions
Bronchoscopy with bilateral bronchoalveolar lavages
Procedure
Lead sponsor
VA Ann Arbor Healthcare System
Federal
Eligibility
18 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 2, 2022 · Synced May 22, 2026, 3:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
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 May 22, 2026, 3:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Pneumococcal Disease, 13-valent Pneumococcal Vaccine
Interventions
13-valent Pneumococcal Conjugate Vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
42 Days to 5 Years
Enrollment
373 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
21
States / cities
Akiak, Alaska • Bethel, Alaska • Chefornak, Alaska + 18 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2012 · Synced May 22, 2026, 3:47 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers
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 May 22, 2026, 3:47 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pneumococcal Infection
Interventions
Placebo, PNU-IMUNE®23, Nine-valent pneumococcal conjugate (PNCRM9)
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years and older
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2002
U.S. locations
2
States / cities
Rochester, New York • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 16, 2014 · Synced May 22, 2026, 3:47 AM EDT
Completed Phase 4 Interventional
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 May 22, 2026, 3:47 AM EDT
Withdrawn No phase listed Observational
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Throat Swab
Procedure
Lead sponsor
Tufts Medical Center
Other
Eligibility
1 Day to 3 Months
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 17, 2015 · Synced May 22, 2026, 3:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
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 7, 2025 · Synced May 22, 2026, 3:47 AM EDT
Completed No phase listed Observational Results available
View directory record Official record
Conditions
Otitis Media
Interventions
Tympanocentesis, Nose/throat swab, Observational
Procedure · Biological
Lead sponsor
Pfizer
Industry
Eligibility
6 Months to 30 Months
Enrollment
239 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
7
States / cities
Penfield, New York • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Feb 28, 2017 · Synced May 22, 2026, 3:47 AM EDT
Active, not recruiting No phase listed Observational
View directory record Official record
Conditions
Pneumonia
Interventions
Receipt of PCV20
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
846,279 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced May 22, 2026, 3:47 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available
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 May 22, 2026, 3:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Influenza
Interventions
13 valent pneumococcal conjugate vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
50 Years to 59 Years
Enrollment
1,116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2013
U.S. locations
41
States / cities
Chandler, Arizona • Rolling Hills Estates, California • Aurora, Colorado + 29 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2015 · Synced May 22, 2026, 3:47 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
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 May 22, 2026, 3:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Meningococcal Meningitis, Measles, Mumps, Rubella, Varicella
Interventions
Menactra®: Meningococcal Polysaccharide Diphtheria Toxoid Conjugate, Measles-mumps-rubella-varicella vaccine, Routine paediatric vaccine - Pneumococcal conjugate (PCV), Routine paediatric vaccine - Hepatitis A
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
9 Months to 12 Months
Enrollment
1,378 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
78
States / cities
Birmingham, Alabama • Dothan, Alabama • Pinson, Alabama + 68 more
Source: ClinicalTrials.gov public record
Updated May 15, 2016 · Synced May 22, 2026, 3:47 AM EDT