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ClinicalTrials.gov public records Last synced Oct 23, 2026, 11:57 PM EDT

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Showing 649–672 of 1,048 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Immunity Clear all
Recruiting No phase listed Observational Accepts healthy volunteers

Send-In Sample Collection for Comprehensive Analyses of Innate and Adaptive Immune Responses During Acute COVID-19 and Convalescence

NCT04582903
View directory record Official record
Conditions
COVID-19 Infection
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
1 Day to 99 Years
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2031
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study Evaluating 13 Valent Pneumococcal Conjugate Vaccine With Trivalent Inactivated Influenza Vaccine

NCT00521586
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 9, 2015 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Trial of pDNA CMV Vaccine (VCL-CT02) Followed by Towne CMV Vaccine (Towne) Challenge

NCT00373412
View directory record Official record
Conditions
Cytomegalovirus Infection
Interventions
VCL CT02 pDNA vaccine, Towne CMV vaccine
Biological
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2006
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 8, 2008 · Synced Oct 23, 2026, 11:57 PM EDT
Recruiting Not applicable Interventional

The Role of Circadian Clock Proteins in Innate and Adaptive Immunity

NCT03482245
View directory record Official record
Conditions
Pneumonia, Necrotizing Soft Tissue Infection, Intraabdominal Infections, Infection Joint
Interventions
Blue Light
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to an HIV Vaccine (SF-2 gp120) With or Without MTP-PE/MF59 Adjuvant

NCT00001019
View directory record Official record
Conditions
HIV Infections
Interventions
rgp120/HIV-1 SF-2, MTP-PE/MF59
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
4
States / cities
St Louis, Missouri • Philadelphia, Pennsylvania • Nashville, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 30, 2012 · Synced Oct 23, 2026, 11:57 PM EDT
Completed No phase listed Observational

Registry of Sustained Immunity to COVID-19 Among ESKD Patients

NCT04495764
View directory record Official record
Conditions
SARS-CoV-2 Infection, Anti-SARS-CoV-2 Infection
Interventions
Not listed
Lead sponsor
Davita Clinical Research
Industry
Eligibility
18 Years to 80 Years
Enrollment
2,315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
12
States / cities
Victorville, California • Bridgeport, Connecticut • Minneapolis, Minnesota + 8 more
Source: ClinicalTrials.gov public record
Updated May 27, 2021 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Not applicable Interventional

A Biobehavioral/Cognitive Treatment for Stress, Depression, and Anxiety in Patients With Stage IV Lung Cancer

NCT05342571
View directory record Official record
Conditions
Advanced Lung Carcinoma, Metastatic Lung Carcinoma, Stage IV Lung Cancer AJCC v8, Stage IVA Lung Cancer AJCC v8, Stage IVB Lung Cancer AJCC v8
Interventions
Behavioral, Psychological or Informational Intervention, Biospecimen Collection, Electronic Health Record Review, Informational Intervention, Survey Administration
Other · Procedure
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 23, 2023 · Synced Oct 23, 2026, 11:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Antigen-Specific Cell Mediated Immune Response to Chlamydia Trachomatis

NCT00970749
View directory record Official record
Conditions
Chlamydia
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
15 Years to 35 Years · Female only
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 7, 2017 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Assessment of the Glyconutrient Ambrotose™ on Immunity, Gut Health, and Safety in Men and Women

NCT04386226
View directory record Official record
Conditions
Healthy
Interventions
Ambrotose LIFE, Advanced Ambrotose, Placebo
Dietary Supplement · Other
Lead sponsor
University of Memphis
Other
Eligibility
20 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 28, 2021 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Human Immune Responses Smallpox

NCT00068198
View directory record Official record
Conditions
Smallpox
Interventions
Dryvax
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2004
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 23, 2026, 11:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Ontogeny of Measles Immunity in Infants

NCT00240916
View directory record Official record
Conditions
Measles
Interventions
Attenuvax (Measles Virus Live Vaccine, 0.5ml subcutaneous), MMR-II (Measles-Mumps-Rubella Virus Live Vaccine, 0.5ml subcutaneous)
Biological
Lead sponsor
Stanford University
Other
Eligibility
6 Months and older
Enrollment
750 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1993 – 2013
U.S. locations
2
States / cities
Palo Alto, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Jun 9, 2022 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Revealing Protective Immunity to Influenza Using Systems Immunology

NCT06501963
View directory record Official record
Conditions
Influenza
Interventions
Live Attenuated Influenza Vaccine
Biological
Lead sponsor
Emory University
Other
Eligibility
18 Years to 49 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response to an HIV Vaccine in Healthy, HIV-Uninfected Adults Who Have Participated in Previous HIV Vaccine Clinical Trials and in Adults Who Have Not Participated in Previous HIV Vaccine Clinical Trials

NCT01376726
View directory record Official record
Conditions
HIV Infections
Interventions
Sub C gp140 Vaccine, MF59C.1 Adjuvant
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
3
States / cities
Birmingham, Alabama • Nashville, Tennessee • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 15, 2021 · Synced Oct 23, 2026, 11:57 PM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers Results available

An Open Label Study of IgG Fc Glycan Composition in Human Immunity

NCT01967238
View directory record Official record
Conditions
Healthy
Interventions
IM Pneumococcal, meningococcal, or flu vaccine
Biological
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 80 Years
Enrollment
129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 23, 2026, 11:57 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Intradermal Influenza Vaccination

NCT06067555
View directory record Official record
Conditions
Vaccine Reaction
Interventions
MicronJet, Fluzone® Quadrivalent, Bacteriostatic Saline
Device · Biological · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 40 Years
Enrollment
249 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 19, 2025 · Synced Oct 23, 2026, 11:57 PM EDT
Completed No phase listed Observational

GI Reflux in Lung Transplant and Its Relationship to Chronic Rejection

NCT00455078
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
esophagogastroduodenoscopy, Standard GER questionnaire (RDQ), Scintigraphic evaluation of solid gastric emptying, Twenty-four hour ambulatory pH testing, Esophageal manometry testing
Procedure · Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 5, 2013 · Synced Oct 23, 2026, 11:57 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

A Repository to Study Host-Microbiome Interactions in Health and Disease

NCT05656378
View directory record Official record
Conditions
Healthy Controls, Pregnancy, Pediatric Illnesses, Inflammatory Diseases
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2032
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 23, 2026, 11:57 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Exercise and COVID-19 Viral T-cell Immunity

NCT05019456
View directory record Official record
Conditions
COVID-19 Respiratory Infection, Influenza
Interventions
COVID-19 Vaccine
Biological
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 44 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 27, 2025 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparison of Immune Responses to Influenza Vaccine In Adults of Different Ages (SLVP015 2007-2017)

NCT01827462
View directory record Official record
Conditions
Influenza
Interventions
Trivalent, inactivated influenza vaccine (TIV), Quadrivalent, inactivated influenza vaccine (IIV4), High-Dose Trivalent, inactivated influenza vaccine (TIV High-Dose)
Biological
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 100 Years
Enrollment
136 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2017
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Oct 23, 2026, 11:57 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Phase 3 Study of Revaccination in Subsequent Pregnancies With Bivalent RSV Vaccine and Duration of Protection of a Single Dose

NCT06866405
View directory record Official record
Conditions
RSV Infection
Interventions
RSVpreF, Placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
0 Years and older
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
81
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 30 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 23, 2026, 11:57 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Influenza Vaccination in Bone Marrow Transplantation

NCT00419224
View directory record Official record
Conditions
Influenza
Interventions
inactivated split-virus influenza vaccine
Biological
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2003
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 11, 2007 · Synced Oct 23, 2026, 11:57 PM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Safety, Tolerability and Immunogenicity of the Venezuelan Equine Encephalitis (VEE) Attenuated Live-Virus Vaccine

NCT00109304
View directory record Official record
Conditions
Venezuelan Equine Encephalitis
Interventions
VEE 3526
Biological
Lead sponsor
DynPort Vaccine Company LLC, A GDIT Company
Industry
Eligibility
18 Years to 40 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Sep 18, 2015 · Synced Oct 23, 2026, 11:57 PM EDT
Active, not recruiting Early Phase 1 Interventional

Anti-Leukemia Immune Responses After Irradiation of Extramedullary Tumors

NCT05035706
View directory record Official record
Conditions
Acute Myeloid Leukemia, Myeloid Leukemia, Recurrent Acute Myeloid Leukemia
Interventions
Biopsy, Biospecimen Collection, Electronic Health Record Review, Photography
Procedure · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 23, 2026, 11:57 PM EDT
Active, not recruiting Phase 1 Interventional

TSR-042 in Addition to Standard of Care Definitive Radiation for Inoperable Endometrial Cancer

NCT03955978
View directory record Official record
Conditions
Endometrial Cancer, Cancer of the Endometrium
Interventions
TSR-042, Brachytherapy, Endometrial biopsy, Blood draw for immune response
Drug · Radiation · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2029
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Oct 23, 2026, 11:57 PM EDT