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Showing 1–24 of 165 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Healthy Adult Immune Response Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety of and Immune Response to HIV-MAG DNA Vaccine With or Without Plasmid IL-12 Adjuvant Delivered Intramuscularly Via Electroporation Followed by VSV-gag HIV Vaccine Boost in Healthy, HIV-Uninfected Adults

NCT01578889
View directory record Official record
Conditions
HIV Infections
Interventions
HIV-MAG vaccine, IL-12 pDNA adjuvant, VSV HIV gag vaccine, Placebo, Ichor Medical Systems TriGrid™ Delivery System (TDS) electroporation (EP) device
Biological · Device
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
5
States / cities
New York, New York • Rochester, New York • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Jul 22, 2026, 3:22 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Effects of ASP5502 in Healthy Adults and Adults With Primary Sjögren's Syndrome

NCT06544642
View directory record Official record
Conditions
Healthy Volunteers, Sjögren's Syndrome
Interventions
ASP5502, Placebo
Drug
Lead sponsor
Astellas Pharma Global Development, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Daytona Beach, Florida
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response of a Prime-Boost HIV Vaccine Regimen in Healthy, HIV-Uninfected, Vaccinia-Naive Adults

NCT01571960
View directory record Official record
Conditions
HIV Infections
Interventions
GEO-D03 DNA vaccine, MVA/HIV62B (MVA62B) vaccine, Placebo for GEO-D03 DNA, Placebo for MVA62B:
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
4
States / cities
Birmingham, Alabama • San Francisco, California • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to Two HIV Vaccine Formulations (rMVA-HIV and rFPV-HIV) Alone or in Combination in HIV Uninfected Adults

NCT00083603
View directory record Official record
Conditions
HIV Infections
Interventions
rMVA-HIV (rMVA-HIV env/gag + rMVA-HIV tat/rev/nef-RT), rFPV-HIV (rFPV-HIV env/gag + rFPV-HIV tat/rev/nef-RT), Empty TBC-FPV, TBC-MVA and TBC-FPV
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
4
States / cities
Birmingham, Alabama • St Louis, Missouri • Rochester, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Jul 22, 2026, 3:22 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Bone Marrow and Peripheral Blood Immune Responses Study

NCT05616546
View directory record Official record
Conditions
Influenza
Interventions
Influenza Vaccine
Biological
Lead sponsor
Emory University
Other
Eligibility
18 Years to 64 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2029
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 30, 2024 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Bird Flu Virus Vaccine (H9N2) in Healthy Adults (Study A)

NCT00110279
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H9N2 (6-2) AA ca Reassortant (A/chicken/Hong Kong/G9/97 x A/Ann Arbor/6/60 ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 20, 2008 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response to a Dengue Virus Vaccine in Healthy Adults

NCT01931176
View directory record Official record
Conditions
Dengue
Interventions
rDEN2Δ30-7169 vaccine, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 14, 2015 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of the Safety and Immune Response to an Investigational Dengue Type 1 Vaccine

NCT01084291
View directory record Official record
Conditions
Dengue Virus
Interventions
Investigational Vaccine for DEN1, Placebo injection
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
2
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jan 2, 2013 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety of Tetravalent Dengue Vaccine Candidate (TDV) in Flavivirus-Naïve and Dengue-Immune Adults

NCT03746015
View directory record Official record
Conditions
Dengue Fever
Interventions
TDV
Biological
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
2
States / cities
Peoria, Illinois • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 7, 2025 · Synced Jul 22, 2026, 3:22 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Effect of Protocatechuic Acid on Biochemical Markers of Immunity Status in Healthy Adults

NCT06121362
View directory record Official record
Conditions
Immunity
Interventions
Protocatechuic Acid or PCA, Placebo
Dietary Supplement
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
50 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 28, 2024 · Synced Jul 22, 2026, 3:22 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

VRC 900: Evaluation of Tissue-Specific Immune Responses in Adults 18 Years of Age and Older

NCT01132859
View directory record Official record
Conditions
Immunity, Mucosal, Immune System Processes, Blood Specimen Collection
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 120 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single Group Study of the Safety of and Immune Response to a Bird Flu Vaccine (H7N3) in Healthy Adults

NCT00516035
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
Live Influenza A Vaccine H7N3 (6-2) AA ca Recombinant (A/chicken/British Columbia/CN-6/2004 x A/Ann Arbor/6/60 ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 17, 2015 · Synced Jul 22, 2026, 3:22 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

HPV Vaccine Reduced Dose

NCT06799494
View directory record Official record
Conditions
HPV
Interventions
Gardasil-9, Lidocaine injection, Lorazepam
Biological · Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years to 45 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 19, 2025 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Challenge Infection of Healthy Adult Volunteers With RSV A2

NCT03388645
View directory record Official record
Conditions
Upper Respiratory Tract Infections
Interventions
10^6.3 PFU of RSV A2, 10^7 PFU of RSV A2
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 2, 2020 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Bird Flu Virus Vaccine (H9N2) in Healthy Adults (Study B)

NCT00380237
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H9N2 (6-2) AA ca Reassortant (A/Chicken/Hong Kong/G9/97 x A/Ann Arbor/6/60 ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 20, 2008 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study on the Safety, Effectiveness and Immune Response of Meningococcal Combined ABCWY Vaccine in Healthy Adolescents and Adults

NCT04886154
View directory record Official record
Conditions
Infections, Meningococcal
Interventions
MenABCWY-2Gen low dose vaccine, MenABCWY-2Gen high dose vaccine, Placebo, MenB vaccine, MenACWY vaccine
Combination Product · Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
10 Years to 50 Years
Enrollment
1,440 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
12
States / cities
Colorado Springs, Colorado • Longmont, Colorado • Doral, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated May 30, 2025 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Dengue Virus Vaccine (rDEN3-3'Ddelta30) in Healthy Adults

NCT00712803
View directory record Official record
Conditions
Dengue
Interventions
rDEN3-3'D4delta30
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 2, 2013 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to an HIV-1 Subtype C Vaccine (AVX101) in HIV Uninfected Adults

NCT00097838
View directory record Official record
Conditions
HIV Infections
Interventions
AVX101, placebo
Biological · Other
Lead sponsor
AlphaVax, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
6
States / cities
Baltimore, Maryland • New York, New York • Rochester, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2012 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional

VRC 307: A Double-Blind, Randomized Phase I Study of the Safety and Immunogenicity of a Prime-Boost Schedule of the Investigational DNA Trivalent Influenza Vaccine, VRC-FLUDNA047-00-VP, Followed by the 2008/2009 Seasonal Influenza Trivalent Inactivat...

NCT00858611
View directory record Official record
Conditions
Influenza, Human
Interventions
VRC-FLUDNA047-00-VP, Flulaval (Registered) Seasonal Influenza Vaccine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of the Safety and Immune Response of Five Admixtures of a Tetravalent Dengue Virus Vaccine

NCT01072786
View directory record Official record
Conditions
Dengue
Interventions
TetraVax-DV Vaccine-Admixture 1, TetraVax-DV Vaccine-Admixture 2, TetraVax-DV Vaccine-Admixture 3, TetraVax-DV Vaccine-Admixture 4, Placebo, TetraVax-DV Vaccine-Admixture 5
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
141 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jan 2, 2013 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional

Phase I Open-Label Study of Recombinant DNA Plasmid Vaccine, VRC-AVIDNA036-00-VP, Encoding for Influenza Virus H5 Hemagglutinin Protein Given Intradermally

NCT00489931
View directory record Official record
Conditions
Influenza A Virus, H5N1 Subtype, Influenza A Virus, Influenzavirus A, Orthomyxovirdae, H5N1 Virus
Interventions
VRC-AVIDNA036-00-VP
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immune Response to a Recombinant Adenovirus HIV-1 Vaccine in Healthy Adults

NCT00695877
View directory record Official record
Conditions
HIV Infections
Interventions
Ad5.ENVA.48 HIV-1 vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional

An Open-Label, Randomized Phase I Study in Healthy Adults of the Safety and Immunogenicity of Prime-Boost Intervals With Monovalent Influenza Subunit Virion (H5N1) Vaccine, A/Indonesia/05/2005 (Sanofi Pasteur, Inc.) Administered Alone or Following Re...

NCT01086657
View directory record Official record
Conditions
Influenza A Virus, H5N1 Subtype
Interventions
VRC-AVIDNA036-00-VP, Monovalent Influenza Subunit Virion (Inactive H5N1) Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 3:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Bird Flu Virus Vaccine (H5N1) in Healthy Adults

NCT00347672
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H5N1 (6-2) AA ca Recombinant (A/VietNam/1203/2004 x A/AnnArbor/6/60/ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 20, 2008 · Synced Jul 22, 2026, 3:22 PM EDT