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Showing 25–43 of 19 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Pneumococcal Pneumonia Clear all
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 Sep 23, 2026, 5:02 PM EDT
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 23, 2026, 5:02 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Genomics and Epigenomics of the Elderly Response to Pneumococcal Vaccines

NCT03104075
View directory record Official record
Conditions
Pneumonia, Aging
Interventions
Pneumococcal 13valent Conj Vaccine Diphtheria CRM197 Protein, Pneumococcal Vaccine Polyvalent
Biological
Lead sponsor
The Jackson Laboratory
Other
Eligibility
60 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Sep 23, 2026, 5:02 PM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

Safety, Tolerability, and Immunogenicity of VAX-31 in Adults ≥50 Years With Prior Pneumococcal Vaccination

NCT07425392
View directory record Official record
Conditions
Pneumococcal Vaccines
Interventions
31-valent pneumococcal conjugate vaccine, PCV20
Biological
Lead sponsor
Vaxcyte, Inc.
Industry
Eligibility
50 Years and older
Enrollment
752 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
30
States / cities
Chinle, Arizona • Phoenix, Arizona • Whiteriver, Arizona + 27 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Phase 1/Phase 2 Study of Polyvalent Pneumococcal Conjugate Vaccine (V116) in Adults (V116-001)

NCT04168190
View directory record Official record
Conditions
Pneumonia, Pneumococcal
Interventions
V116, Pneumovax™23
Biological
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
20
States / cities
Birmingham, Alabama • Mesa, Arizona • Coral Gables, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2022 · Synced Sep 23, 2026, 5:02 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 10, 2026 · Synced Sep 23, 2026, 5:02 PM EDT
Active, not recruiting No phase listed Observational

A Study to Learn About How Well the Prevnar 20 Vaccine Works for Pneumonia in People Who Are 65 Years and Older

NCT06782282
View directory record Official record
Conditions
Community-Acquired Pneumonia (CAP)
Interventions
Not listed
Lead sponsor
Pfizer
Industry
Eligibility
65 Years and older
Enrollment
22,234,435 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pharmacist Impact on Pneumococcal Polysaccharide Vaccination Rates in Patients With Diabetes in a Supermarket Pharmacy Chain

NCT03851978
View directory record Official record
Conditions
Pneumococcal Pneumonia
Interventions
Pharmacist Vaccine Education
Behavioral
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
19 Years to 64 Years
Enrollment
431 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
4
States / cities
Midlothian, Virginia • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 14, 2019 · Synced Sep 23, 2026, 5:02 PM 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 Sep 23, 2026, 5:02 PM EDT
Completed Phase 3 Interventional

New Antibiotic to Treat Patients With Community-acquired Pneumonia Due to a Specific Bacteria (S. Pneumoniae Pneumonia)

NCT00035269
View directory record Official record
Conditions
Pneumonia, Pneumococcal, Community Acquired Infections, Gram-positive Bacterial Infections
Interventions
Antibiotic
Drug
Lead sponsor
Pfizer
Industry
Eligibility
13 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
34
States / cities
Los Angeles, California • Jacksonville, Florida • Naples, Florida + 29 more
Source: ClinicalTrials.gov public record
Updated Apr 25, 2011 · Synced Sep 23, 2026, 5:02 PM 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 Sep 23, 2026, 5:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Modulation of Steroid Immunosuppression by Alveolar Efferocytosis

NCT03034642
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 Sep 23, 2026, 5:02 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 23, 2026, 5:02 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity Study of 20vPnC When Coadministered With a Booster Dose of BNT162b2

NCT04887948
View directory record Official record
Conditions
Pneumococcal Disease, COVID-19, SARS-CoV-2 Infection
Interventions
20-valent pneumococcal conjugate vaccine (20vPnC), BNT162b2, Saline
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
65 Years and older
Enrollment
570 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
27
States / cities
Anaheim, California • Walnut Creek, California • Coral Gables, Florida + 21 more
Source: ClinicalTrials.gov public record
Updated Dec 13, 2022 · Synced Sep 23, 2026, 5:02 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 8, 2026 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Effectiveness of the Pneumococcal Polysaccharide Vaccine in Military Recruits

NCT02079701
View directory record Official record
Conditions
Pneumonia, Acute Respiratory Disease
Interventions
23-valent pneumococcal vaccine, Placebo
Biological
Lead sponsor
Naval Health Research Center
Federal
Eligibility
Not listed
Enrollment
152,723 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2007
U.S. locations
5
States / cities
San Diego, California • Great Lakes, Illinois • Fort Leonard Wood, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2014 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Single Ascending Dose Study in Adults (Stage 1) and Single Ascending Dose-Finding Study (Stage 2) in Elderly Subjects With ASP3772, A Pneumococcal Vaccine

NCT03803202
View directory record Official record
Conditions
Pneumonia, Bacterial, Healthy Volunteers, Pneumococcal Disease
Interventions
ASP3772, PCV13, PPSV23
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 85 Years
Enrollment
630 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
26
States / cities
Banning, California • San Diego, California • San Marcos, California + 21 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2023 · Synced Sep 23, 2026, 5:02 PM EDT
Completed No phase listed Observational

Epidemiologic Study Of The Distribution Of Vaccine-Type Streptococcus Pneumoniae Serotypes In Adults In The US With Community-Acquired Pneumonia

NCT01086397
View directory record Official record
Conditions
Pneumonia, Pneumococcal, Vaccines, Pneumococcal
Interventions
Urine sample collection
Procedure
Lead sponsor
Pfizer
Industry
Eligibility
50 Years and older
Enrollment
782 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
14
States / cities
Mobile, Alabama • La Mesa, California • Tampa, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2012 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 3 Interventional Results available

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

NCT00509106
View directory record Official record
Conditions
Bacterial Pneumonia
Interventions
Ceftaroline fosamil for Injection, Ceftriaxone, Placebo
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years and older
Enrollment
622 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Sep 23, 2026, 5:02 PM EDT