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ClinicalTrials.gov public records Last synced Oct 24, 2026, 2:40 PM EDT

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Showing 1–24 of 267 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: vaccinated Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity Study of QIVc in Healthy Pediatric Subjects

NCT04074928
View directory record Official record
Conditions
Influenza, Human, Virus Diseases
Interventions
QIVc, Comparator QIV
Biological
Lead sponsor
Seqirus
Industry
Eligibility
6 Months to 47 Months
Enrollment
2,414 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
47
States / cities
Mobile, Alabama • Anaheim, California • Downey, California + 37 more
Source: ClinicalTrials.gov public record
Updated Jan 12, 2022 · Synced Oct 24, 2026, 2:40 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

NOWDx Test for the Detection of Antibodies to COVID-19 in Lay Persons

NCT04799392
View directory record Official record
Conditions
COVID-19, SARS-CoV-2, Coronavirus
Interventions
NOWDx COVID-19 Test
Device
Lead sponsor
NOWDiagnostics, Inc.
Industry
Eligibility
2 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
5
States / cities
Fayetteville, Arkansas • Anoka, Minnesota • Nixa, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2021 · Synced Oct 24, 2026, 2:40 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Messenger RNA (mRNA)-Based, Personalized Cancer Vaccine Against Neoantigens Expressed by the Autologous Cancer

NCT03480152
View directory record Official record
Conditions
Melanoma, Colon Cancer, Gastrointestinal Cancer, Genitourinary Cancer, Hepatocellular Cancer
Interventions
National Cancer Institute (NCI)-4650, a messenger ribonucleic acid (mRNA)-based, Personalized Cancer Vaccine
Biological
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 70 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 2, 2020 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Phase 2 Interventional

Mucosal and Systemic Immunity After Viral Challenge of Healthy Volunteers Vaccinated With Inactivated Influenza Vaccine Via the Intranasal Versus Intramuscular Route

NCT03845231
View directory record Official record
Conditions
Influenza
Interventions
Flucelvax(R), Human Challenge virus
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 10, 2020 · Synced Oct 24, 2026, 2:40 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

A Safety and Immunogenicity Trial of OCU500, ChAd36 Vector Encoding SARS-CoV-2 Spike Vaccine Via Intranasal and Inhalational Routes in Previously Vaccinated Adults

NCT07536308
View directory record Official record
Conditions
COVID-19
Interventions
OCU500
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
6
States / cities
Decatur, Georgia • Baltimore, Maryland • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2026 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

H5N1 Vaccination With and Without AS03: Systems Biology Analysis

NCT01573312
View directory record Official record
Conditions
Influenza
Interventions
ASO3 Adjuvant, Influenza A/H5N1 Vaccine
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 21, 2019 · Synced Oct 24, 2026, 2:40 PM EDT
Terminated Phase 2 Interventional Results available

Vaccine Therapy With Tumor Specific Mutated VHL Peptides in Adult Cancer Patients With Renal Cell Carcinoma

NCT00001703
View directory record Official record
Conditions
Renal Cell Carcinoma
Interventions
incomplete Freund's adjuvant, von Hippel-Lindau peptide vaccine
Biological
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 25, 2014 · Synced Oct 24, 2026, 2:40 PM EDT
Completed No phase listed Observational

Assessment of Alterations in Immune Function During Pregnancy and Post Parturition

NCT01200979
View directory record Official record
Conditions
Pregnancy Immune Function
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years · Female only
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 18, 2019 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mail Outreach To Increase Vaccination Acceptance Through Engagement

NCT02243774
View directory record Official record
Conditions
Influenza, Human, Influenza, Human Flu
Interventions
Core letter signed by Surgeon General, Core letter signed by the Director of the National Vaccine Program, Core letter signed by Surgeon General + implementation prompt, Core letter signed by SG + enhanced implementation prompt
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
66 Years and older
Enrollment
228,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 12, 2017 · Synced Oct 24, 2026, 2:40 PM EDT
Active, not recruiting No phase listed Observational

Evaluating ABRYSVO Maternal Vaccine Effectiveness Among Infants

NCT07249320
View directory record Official record
Conditions
Respiratory Syncytial Virus (RSV)
Interventions
ABRYSVO
Biological
Lead sponsor
Pfizer
Industry
Eligibility
0 Years to 50 Years
Enrollment
1 participant
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Oct 24, 2026, 2:40 PM EDT
Recruiting No phase listed Observational

Evaluation of Human Immune Responses Vaccination in Patients With Lymphoma

NCT03501576
View directory record Official record
Conditions
Chronic Lymphocytic Leukemia, Diffuse Large B-Cell Lymphoma, Follicular Lymphoma, Mantle Cell Lymphoma, Mature T-Cell and NK-Cell Non-Hodgkin Lymphoma
Interventions
Inactivated Influenza Vaccine
Biological
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Not applicable Interventional Results available

COVID-19 Vaccination Take-Up

NCT04867174
View directory record Official record
Conditions
Covid19, Vaccination
Interventions
Financial incentives, Convenient scheduling link, Race concordant, Gender concordant
Behavioral
Lead sponsor
National Bureau of Economic Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
2,701 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Martinez, California
Source: ClinicalTrials.gov public record
Updated Mar 28, 2024 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

P3+ Intervention Phase

NCT02898688
View directory record Official record
Conditions
Vaccination
Interventions
Control Site, Intervention Site, Patient-level Control Group, Patient-level Intervention Group
Behavioral
Lead sponsor
Emory University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
2,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
23
States / cities
Aurora, Colorado • Boulder, Colorado • Denver, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

4 Pillars Toolkit for Adolescent Vaccination

NCT02165722
View directory record Official record
Conditions
Adolescent HPV Vaccine, Adolescent Influenza Vaccine
Interventions
4 Pillars Toolkit
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
11 Years to 17 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 28, 2018 · Synced Oct 24, 2026, 2:40 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 22, 2026 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Study of Novel Types 1 and 3 Oral Poliomyelitis Vaccines

NCT04529538
View directory record Official record
Conditions
Poliomyelitis
Interventions
Novel Oral Polio Vaccine Type 1 (nOPV1), Novel Oral Polio Vaccine Type 3 (nOPV3), Sabin Monovalent Oral Polio Vaccine Type 1 (mOPV1), Sabin Monovalent Oral Polio Vaccine Type 3 (mOPV3)
Biological
Lead sponsor
PATH
Other
Eligibility
18 Years to 45 Years
Enrollment
226 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
4
States / cities
Baltimore, Maryland • Lebanon, New Hampshire • Chapel Hill, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2024 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Phase 3 Adolescent Study for SARS-CoV-2 rS Variant Vaccines

NCT05973006
View directory record Official record
Conditions
COVID-19
Interventions
NVX-CoV2601 co-formulated Omicron XBB.1.5 SARS-CoV-2 rS vaccine, Prototype/XBB.1.5 Bivalent Vaccine (5 µg)
Biological
Lead sponsor
Novavax
Industry
Eligibility
11 Years to 18 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
20
States / cities
Davie, Florida • Jacksonville, Florida • Miami, Florida + 17 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2025 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Collaborative Efforts to Increase Flu Vaccination

NCT01403649
View directory record Official record
Conditions
Influenza, Collaboration
Interventions
Private/public collaboration to increase flu vaccination, Usual care
Behavioral · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 18 Years
Enrollment
117,175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
27
States / cities
Aurora, Colorado • Brighton, Colorado • Broomfield, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2015 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

The Long-term Antibody Persistence of GSK Biologicals' Meningococcal Vaccine GSK134612 in Healthy Adolescents/Adults

NCT00715910
View directory record Official record
Conditions
Infections, Meningococcal
Interventions
Nimenrix, Blood sampling
Biological · Procedure
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
15 Years to 30 Years
Enrollment
818 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
10
States / cities
Daly City, California • Fairfield, California • Redwood City, California + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 27, 2014 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Therapeutic Cocaine Vaccine: Human Laboratory Study

NCT00965263
View directory record Official record
Conditions
Cocaine Dependence
Interventions
Cocaine vaccine (TA-CD)
Biological
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 11, 2017 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Phase 2 Interventional

Dryvax Dilution-Prev Vacc Adults

NCT00032708
View directory record Official record
Conditions
Smallpox
Interventions
Dryvax
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
90 participants
Timeline
2004
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 24, 2026, 2:40 PM EDT
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 24, 2026, 2:40 PM EDT
Active, not recruiting Phase 1 Interventional

Dendritic Cell/AML Fusion Cell Vaccine Following Allogeneic Transplantation in AML Patients

NCT03679650
View directory record Official record
Conditions
Acute Myelogenous Leukemia
Interventions
DC/AML fusion cells
Biological
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 24, 2026, 2:40 PM EDT
Completed Phase 2 Interventional Results available

To Immunize Patients With Extensive Stage SCLC Combined With Chemo With or Without All Trans Retinoic Acid

NCT00617409
View directory record Official record
Conditions
Small Cell Lung Cancer
Interventions
Paclitaxel, Drug: Ad.p53-DC vaccines, All -trans Retinoic Acid (ATRA)
Drug · Biological
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2019
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Nov 8, 2019 · Synced Oct 24, 2026, 2:40 PM EDT