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Showing 1–24 of 1,042 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Immunity Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Almonds on Immune Strength and Response to Flu Vaccination in Overweight Older Men and Postmenopausal Women: A Randomized Controlled Study

NCT05031663
View directory record Official record
Conditions
Immune Response, Inflammation
Interventions
Almond group, Control Group
Dietary Supplement
Lead sponsor
Loma Linda University
Other
Eligibility
40 Years to 70 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Dec 8, 2025 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Human Lung Responses to Respiratory Pathogens

NCT01967628
View directory record Official record
Conditions
Respiratory Infection
Interventions
Vitamin D3 (cholecalciferol), Placebo Sugar Pill
Dietary Supplement
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 60 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 28, 2018 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study on the Immune Response and Safety Elicited by a Vaccine Against Respiratory Syncytial Virus (RSV) When Given Alone and Together With a Vaccine Against Influenza in Adults Aged 65 Years and Above

NCT05559476
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
RSVPreF3 OA investigational vaccine, FLU HD vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
65 Years and older
Enrollment
1,029 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
46
States / cities
Birmingham, Alabama • Tempe, Arizona • Canoga Park, California + 41 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2024 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Early Immune Responses to Inactivated Influenza Vaccine: a Pilot Study

NCT01522248
View directory record Official record
Conditions
Influenza Virus Vaccine
Interventions
Trivalent Inactivated Influenza vaccine
Biological
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 14, 2019 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 1 Interventional

Safety and Efficacy of an Immune Response Modifier to Treat Inoperable Advanced Melanoma Skin Lesions

NCT00091689
View directory record Official record
Conditions
Melanoma
Interventions
852A
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
2
States / cities
Lebanon, New Hampshire • Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 26, 2008 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Addition of Whole Grains to the Diets of Middle-school Children

NCT01094652
View directory record Official record
Conditions
Healthy
Interventions
Whole grain diet, Refined grain diet
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
11 Years to 15 Years
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 1, 2012 · Synced Jul 21, 2026, 4:41 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 14, 2021 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Safety and Immune Response of Two-Doses of Candidate Influenza Vaccine GSK 1557484A in Adults

NCT00510874
View directory record Official record
Conditions
Influenza
Interventions
Pumarix™, Pandemrix ™
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
780 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
7
States / cities
Huntsville, Alabama • Anaheim, California • Miami, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 16, 2018 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Tai Chi Chih and Varicella Zoster Immunity

NCT00029484
View directory record Official record
Conditions
Varicella
Interventions
Tai chi chih
Behavioral
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
60 Years to 80 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2006 · Synced Jul 21, 2026, 4:41 PM EDT
Active, not recruiting Phase 2 Interventional

Combined Treatment of Durvalumab, Bevacizumab, Tremelimumab and Transarterial Chemoembolization (TACE) in Subjects With Hepatocellular Carcinoma or Biliary Tract Carcinoma

NCT03937830
View directory record Official record
Conditions
Hepatocellular Cancer, Hepatocellular Carcinoma, Metastatic Hepatocellular Carcinoma
Interventions
durvalumab, Doxorubicin-Eluting Beads, TACE, bevacizumab, Tremelimumab
Drug · Procedure
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 120 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Human Immune Response to Ixodes Scapularis Tick Bites

NCT05036707
View directory record Official record
Conditions
Tick-borne Diseases, Tick Resistance, Lyme Disease
Interventions
Xenodiagnosis Ticks, skin biopsy, blood draw
Device · Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 1 Interventional

Edible Plant Exosome Ability to Prevent Oral Mucositis Associated With Chemoradiation Treatment of Head and Neck Cancer

NCT01668849
View directory record Official record
Conditions
Head and Neck Cancer, Oral Mucositis
Interventions
Grape extract, Lortab, Fentanyl patch, mouthwash
Dietary Supplement · Drug
Lead sponsor
University of Louisville
Other
Eligibility
20 Years to 85 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2022
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 8, 2022 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 2 Interventional

A Pilot Study of the Combination of Retinoic Acid and Interferon-Alpha2a for the Treatment of Lymphoproliferative Disorders in Children With Immunodeficiency Syndromes

NCT00001438
View directory record Official record
Conditions
HIV Infections, Immunologic Deficiency Syndromes, Lymphoproliferative Disorders
Interventions
all-trans-retinoic acid with IFN-alpha2a
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Early Phase 1 Interventional Results available

Study to Assess Safety and Immune Response of Stage IIB-IV Resected Melanoma After Treatment With MAGE-A3 ASCI

NCT01425749
View directory record Official record
Conditions
Melanoma
Interventions
recMAGE-A3 + AS15 ASCI
Biological
Lead sponsor
Craig L Slingluff, Jr
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 3, 2016 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 4 Interventional Results available

A Research Study to See if a Change in Therapy for HIV Infection Can Improve the Immune Response to Treatment

NCT00145795
View directory record Official record
Conditions
HIV Infections
Interventions
Kaletra + Current Dual NRTI Backbone, Current Regimen
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 14, 2022 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

LIFEHOUSE: Description of the Tent Bucket -Immune Support

NCT04734288
View directory record Official record
Conditions
Immune Response
Interventions
Vit.D3 5000 IU, Immune Active
Dietary Supplement
Lead sponsor
Metagenics, Inc.
Industry
Eligibility
18 Years to 69 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Gig Harbor, Washington
Source: ClinicalTrials.gov public record
Updated Oct 29, 2023 · Synced Jul 21, 2026, 4:41 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Evaluating the Dose, Safety, Tolerability, and Immunogenicity of Mosaic Hexavalent Influenza Vaccine VRCFLUMOS0116-00-VP (FluMos-v2) With and Without ALFQ Adjuvant in Healthy Adults

NCT06863142
View directory record Official record
Conditions
Influenza Prevention, Seasonal Influenza
Interventions
VRC-FLUMOS0116-00-VP, ALFQ
Biological · Other
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
2025 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 2 Interventional Results available

Intradermal Versus Intramuscular Polio Vaccine Booster in HIV-Infected Subjects

NCT01686503
View directory record Official record
Conditions
Polio Immunity
Interventions
IPOL (Sanofi Pasteur) inactivated polio vaccine booster dose
Drug
Lead sponsor
Eastern Virginia Medical School
Other
Eligibility
18 Years to 90 Years
Enrollment
231 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 4, 2015 · Synced Jul 21, 2026, 4:41 PM EDT
Completed No phase listed Observational

Influenza Vaccine in HIV Infection: Immune Response and Effect on Viral Load

NCT00025922
View directory record Official record
Conditions
HIV Infection
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 21, 2026, 4:41 PM EDT
Recruiting No phase listed Observational

Natural History of Systemic and Nasal Mucosal Immunity to Influenza and SARS-CoV-2 in Adults After Vaccination

NCT04794829
View directory record Official record
Conditions
Influenza, COVID-19
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 120 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Terminated Phase 3 Interventional Results available

Janssen Ad26.CoV2.S Vaccine Booster in Kidney Transplant Recipients

NCT05220397
View directory record Official record
Conditions
Kidney Transplant Recipient
Interventions
Janssen Ad26.CoV2.S Vaccine, Reduction in Immunosuppression Medication, Maintenance in Immunosuppression Medication
Biological · Other
Lead sponsor
Mark Stegall
Other
Eligibility
18 Years and older
Enrollment
468 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
3
States / cities
Phoenix, Arizona • Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 14, 2025 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Immune Response and Safety Comparison of 3 Lots of GSK Biologicals' DTaP-IPV Candidate Vaccine to DTaP + IPV Vaccines

NCT00148941
View directory record Official record
Conditions
Tetanus, Acellular Pertussis, Diphtheria
Interventions
SB213503 lot 1, SB213503 lot 2, SB213503 lot 3, Infanrix, IPOL, M-M-R II
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
4 Years to 6 Years
Enrollment
4,209 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
24
States / cities
Little Rock, Arkansas • Antioch, California • Daly City, California + 20 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Jul 21, 2026, 4:41 PM EDT
Not yet recruiting Phase 1Phase 2 Interventional

Upadacitinib in Treatment of JAK/STAT Pathway Disorders With Activating Mutations

NCT07670156
View directory record Official record
Conditions
JAK1 GOF, STAT1 GOF, STAT3 GOF, STAT5B GOF, STAT6 GOF
Interventions
Upadacitinib, Placebo
Drug
Lead sponsor
Lisa Satter
Other
Eligibility
12 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
3
States / cities
St Louis, Missouri • New York, New York • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effects of a Vaginal Contraceptive Ring on Vaginal Microbiota and Local Immunity

NCT02432404
View directory record Official record
Conditions
Bacterial Vaginosis
Interventions
NuvaRing
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Jul 21, 2026, 4:41 PM EDT