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ClinicalTrials.gov public records Last synced Oct 7, 2026, 4:09 AM EDT

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Showing 1–24 of 127 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Healthy Adult Immune Responses to Vaccine Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Expanded Characterization of Immune Response to Merck Adenovirus 5 Gag/Pol/Nef Vaccine Given to HIV Uninfected Adults

NCT00486408
View directory record Official record
Conditions
HIV Infections
Interventions
MRKAd5 HIV-1 gag/pol/nef
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
4
States / cities
Birmingham, Alabama • Rochester, New York • Nashville, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Find the Dose and Assess the Immune Response and Safety of a Vaccine Against Influenza in Healthy Younger and Older Adults

NCT06431607
View directory record Official record
Conditions
Influenza, Human
Interventions
F2G22B/DL001Z, F2H23D/DL001Z-NH, F2H23B/DL001Z-NH, F2H23H/DL001Z, FDQ23A-NH (Flu D-QIV), GSK5800544A, Flu D-TIV, F2H23A/DL001Z-NH, F2H23G/DL001Z, Fluzone HD Quadrivalent, Fluzone HD
Biological · Combination Product
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 85 Years
Enrollment
845 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
18
States / cities
Hialeah, Florida • Miami, Florida • Chicago, Illinois + 14 more
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 7, 2026, 4:09 AM 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 2, 2017 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to Two HIV Vaccines: SAAVI DNA-C2 Boosted With SAAVIMVA-C, in HIV-Negative Adults

NCT00574600
View directory record Official record
Conditions
HIV Infections
Interventions
SAAVI DNA-C2 vaccine, SAAVI MVA-C vaccine, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Cow/Human Parainfluenza Virus Vaccine (rB/HPIV3) in Healthy Infants, Children, and Adults

NCT00366782
View directory record Official record
Conditions
Paramyxoviridae Infections, Virus Diseases
Interventions
rB/HPIV3, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 49 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 1, 2012 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

VRC 309: A Multi-Center, Open-Label, Randomized Phase I Study of an Investigational Influenza DNA Vaccine Followed by 2009/2010 Seasonal Influenza Trivalent Inactivated Vaccine (TIV) Compared to Two Injections of TIV in Adults 45-70 Years

NCT00995982
View directory record Official record
Conditions
Influenza, Human
Interventions
VRC-FLUDNA056-00VP
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
45 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
2
States / cities
Bethesda, Maryland • Annandale, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune System Response to an HIV Vaccine (EP HIV-1090) in HIV Uninfected Adults

NCT00054860
View directory record Official record
Conditions
HIV Infections
Interventions
EP HIV-1090
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2005
U.S. locations
4
States / cities
Boston, Massachusetts • St Louis, Missouri • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 7, 2026, 4:09 AM 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 2, 2012 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Immune Response After a Booster Dose of a Quadrivalent Meningococcal (MenACYW) Conjugate Vaccine When Administered Alone or Concomitantly With a Licensed Meningococcal Serogroup B Vaccine, in Participants Who Received Primary Quadrivalent Meningococcal Conjugate Vaccine (MCV4)

NCT04084769
View directory record Official record
Conditions
Meningococcal Immunisation (Healthy Volunteers)
Interventions
Meningococcal polysaccharide (serogroups A, C, Y, and W) tetanus toxoid Conjugate vaccine MenACYW Conjugate vaccine, Meningococcal Group B vaccine (Trumenba®), Meningococcal group B vaccine (Bexsero®)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
13 Years to 26 Years
Enrollment
570 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
29
States / cities
Birmingham, Alabama • San Diego, California • Bardstown, Kentucky + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a DNA Vaccine and a Recombinant HIV-1-MVA Vaccine, Separately and in Combination, in Healthy Adults

NCT00428337
View directory record Official record
Conditions
HIV Infections
Interventions
EP-1233, MVA-mBN32
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
3
States / cities
San Francisco, California • Rochester, New York • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of Alendronate on the Immune Response to Hepatitis B Vaccine in Healthy Adults

NCT02057263
View directory record Official record
Conditions
Hepatitis B
Interventions
Alendronate, Hepatitis B Vaccine, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
40 Years to 70 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 21, 2016 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Combination HIV Vaccine Regimen in HIV Uninfected Adults

NCT00073216
View directory record Official record
Conditions
HIV Infections
Interventions
Clade B gag DNA/PLG and env DNA/PLG Microparticles, Clade B Recombinant, Oligomeric gp140/MF59 Adjuvant
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2007
U.S. locations
4
States / cities
St Louis, Missouri • Providence, Rhode Island • Nashville, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 7, 2026, 4:09 AM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers

How Healthy Adults Respond to the Nasal Flu Vaccine

NCT07726862
View directory record Official record
Conditions
Mucosal Immune Response to Influenza Vaccination
Interventions
FluMist (Live Attenuated Influenza Vaccine)
Biological
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2031
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response to Different Combinations of the DNA-HIV-PT123 and AIDSVAX® B/E Vaccines in Healthy, HIV-Uninfected Adults

NCT02207920
View directory record Official record
Conditions
HIV Infections
Interventions
AIDSVAX B/E Vaccine, DNA-HIV-PT123 Vaccine, Placebo for DNA-HIV-PT123, Placebo for AIDSVAX B/E
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
7
States / cities
San Francisco, California • New York, New York • Rochester, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2021 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Dose, Safety, Tolerability and Immunogenicity of a Stabilized Prefusion RSV F Subunit Protein Vaccine, VRC-RSVRGP084-00-VP (DS-Cav1), Alone or With Alum Adjuvant, in Healthy Adults

NCT03049488
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
VRC-RSVRGP084-00-VP, Aluminum Hydroxide Suspension
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 23, 2020 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immune Response to an Investigational Vaccine Against Respiratory Syncytial Virus in Healthy Adults

NCT04227210
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
RSV vaccine MV-012-968 (dosage #1), RSV vaccine MV-012-968 (dosage #2)
Biological
Lead sponsor
Meissa Vaccines, Inc.
Industry
Eligibility
18 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 16, 2020 · Synced Oct 7, 2026, 4:09 AM EDT
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 15, 2021 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

VRC 320: A Phase I, Randomized Clinical Trial to Evaluate the Safety and Immunogenicity of a Zika Virus DNA Vaccine, VRC-ZKADNA090-00-VP, Administered Via Needle and Syringe or Needle-free Injector, PharmaJet, inHealthy Adults

NCT02996461
View directory record Official record
Conditions
Prevention of Zika Infection, Zika-Specific Immune Response
Interventions
VRC-ZKADNA090-00-VP
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
2016 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Oct 7, 2026, 4:09 AM 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 8, 2025 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study on the Safety and Immune Response of Investigational COVID-19 mRNA Vaccines in Healthy Adults

NCT05960097
View directory record Official record
Conditions
SARS-CoV-2, COVID-19
Interventions
CV0701 mRNA COVID-19 Vaccine (Low dose), CV0701 mRNA COVID-19 Vaccine (Medium dose), CV0701 mRNA COVID-19 Vaccine (High dose), CV0601 mRNA COVID-19 Vaccine, Control vaccine, CV0801 mRNA COVID-19 Vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
692 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
3
States / cities
Sacramento, California • Hollywood, Florida • Peoria, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 23, 2025 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Prime-Boost Vaccine Regimen in HIV-Uninfected Vaccine-Naive Adults

NCT00820846
View directory record Official record
Conditions
HIV Infections
Interventions
pGA2/JS7 DNA vaccine, Placebo, MVA/HIV62 vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
299 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
10
States / cities
Birmingham, Alabama • San Francisco, California • Decatur, Georgia + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 9, 2022 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response to Two Admixtures of a Tetravalent Dengue Virus Vaccine

NCT01506570
View directory record Official record
Conditions
Dengue
Interventions
TetraVax-DV Vaccine - Admixture TV003, TetraVax-DV Vaccine - Admixture TV005, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
3
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Aug 20, 2015 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study on the Immune Response and Safety of an RSV Vaccine When Given to Adults 18 Years of Age and Above Who Received Lung or Kidney Transplant and Are at an Increased Risk of Respiratory Syncytial Virus Lower Respiratory Tract Disease and Compared to Healthy Adults 50 Years of Age and Above

NCT05921903
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
RSVPreF3 OA Investigational Vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
386 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
10
States / cities
Phoenix, Arizona • Chicago, Illinois • Lexington, Kentucky + 6 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Oct 7, 2026, 4:09 AM EDT
Completed Phase 1 Interventional

Phase I Study of HIV Adenoviral Vector Vaccine in Healthy Subjects Using Needle or Biojector Injection

NCT00709605
View directory record Official record
Conditions
HIV Infections
Interventions
VRC-HIVADV014-00-VP
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Oct 7, 2026, 4:09 AM EDT