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Showing 1–24 of 125 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Healthy Adult Immune Responses to Vaccine Clear all
Completed Phase 2 Interventional Accepts healthy volunteers

Phase II Study to Investigate the Kinetics of the Immune Response Generated by Influenza Virus Vaccine.

NCT00192309
View directory record Official record
Conditions
Influenza
Interventions
CAIV-T, TIV, Placebo
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001
U.S. locations
1
States / cities
Stamford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 13, 2012 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a West Nile Virus Vaccine (WN/DEN4-3'delta30) in Healthy Adults

NCT00094718
View directory record Official record
Conditions
West Nile Fever Encephalitis
Interventions
WN/DEN4-3'delta30, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
2
States / cities
Baltimore, Maryland • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 2, 2013 · Synced Jul 23, 2026, 2:22 PM 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 13, 2021 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Chikungunya Virus Vaccine Trial in Healthy Adults

NCT01489358
View directory record Official record
Conditions
Viral Vaccines, Chikungunya Fever, Chikungunya Virus Infection
Interventions
VRC-CHKVLP059-00-VP
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 24, 2016 · Synced Jul 23, 2026, 2:22 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 8, 2015 · Synced Jul 23, 2026, 2:22 PM 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 1, 2017 · Synced Jul 23, 2026, 2:22 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

A Study on the Safety and Immune Response to an mRNA-based RSV Investigational Vaccine in Healthy Adults Aged 18-45 Years

NCT06573281
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
Investigational RSV vaccine 1, Investigational RSV vaccine 2, Investigational RSV vaccine 3, Investigational RSV vaccine 4, Investigational RSV vaccine 5, Investigational RSV vaccine 6, Placebo
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 45 Years
Enrollment
213 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
5
States / cities
Rolling Hills Estates, California • Atlanta, Georgia • Lenexa, Kansas + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2025 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a DNA HIV Vaccine (pGA2/JS7) Boosted With a Modified Vaccinia HIV Vaccine (MVA/HIV62) in Healthy Adults

NCT00301184
View directory record Official record
Conditions
HIV Infections
Interventions
pGA2/JS7 DNA, Modified vaccinia Ankara/HIV62
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
6
States / cities
Birmingham, Alabama • Baltimore, Maryland • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2022 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to an HIV-1 Vaccine Boost (VRC-HIVADV014-00-VP) in HIV Uninfected Adults Who Participated in HVTN 052

NCT00091416
View directory record Official record
Conditions
HIV Infections
Interventions
VRC-HIVADV014-00-VP
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2006
U.S. locations
8
States / cities
Baltimore, Maryland • Boston, Massachusetts • St Louis, Missouri + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Jul 23, 2026, 2:22 PM 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 14, 2021 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a DNA HIV Vaccine Followed By Boosting With One of Two Serotypes of Adenoviral Vector HIV Vaccine in Healthy Adults

NCT00472719
View directory record Official record
Conditions
HIV Infections
Interventions
VRC-HIVADV027-00-VP, VRC-HIVADV038-00-VP, VRC-HIVDNA044-00-VP
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2013
U.S. locations
7
States / cities
Birmingham, Alabama • San Francisco, California • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety of and Immune Response to an HIV Vaccine Followed by Booster, Administered by Two Devices, in HIV-Uninfected Adults

NCT01260727
View directory record Official record
Conditions
HIV Infections
Interventions
PENNVAX-G DNA Vaccine, MVA-CMDR Vaccine, Placebo PENNVAX-G Vaccine, Placebo MVA-CMDR Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a West Nile Virus Vaccine (WN/DEN4delta30) in Healthy Adults

NCT00537147
View directory record Official record
Conditions
West Nile Fever
Interventions
WN/DEN4delta30 vaccine, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
26 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 23, 2026, 2:22 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study of Safety and Immune Response to Different Doses of a Cytomegalovirus Vaccine in Healthy Adults

NCT05089630
View directory record Official record
Conditions
Cytomegalovirus Infections
Interventions
Pentamer (low)/gB(low)/Adjuvant vaccine, Pentamer (med)/gB(low)/Adjuvant vaccine, Pentamer (med)/gB(med)/Adjuvant vaccine, Pentamer (high)/gB(med)/Adjuvant vaccine, Placebo (saline solution)
Biological · Combination Product
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 50 Years
Enrollment
333 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
18
States / cities
Anaheim, California • Long Beach, California • Los Angeles, California + 15 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 23, 2026, 2:22 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 23, 2026, 2:22 PM 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 14, 2025 · Synced Jul 23, 2026, 2:22 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 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of the Safety of and Immune Response to Varying Doses of a Vaccine Against COVID-19 in Healthy Adults

NCT04758962
View directory record Official record
Conditions
Virus Diseases
Interventions
1 µg CoV2 SAM (LNP)
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 17, 2024 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to an Experimental HIV Vaccine (VRC-HIVADV014-00-VP) in HIV Uninfected Adults

NCT00119873
View directory record Official record
Conditions
HIV Infections
Interventions
VRC-HIVADV014-00-VP
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2006
U.S. locations
3
States / cities
San Francisco, California • Nashville, Tennessee • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Tick-Borne Encephalitis Vaccine (LGT(TP21)/DEN4) in Healthy Adults

NCT00118924
View directory record Official record
Conditions
Tick-Borne Encephalitis
Interventions
LGT(TP21)/DEN4, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 20, 2008 · Synced Jul 23, 2026, 2:22 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Characterizing the Human Airway Immune Response to FluMist Vaccination

NCT07177417
View directory record Official record
Conditions
Healthy Young Adults, Influenza Vaccines, Influenza Vaccine Response
Interventions
FluMist, inactivated influenza vaccine, bronchoscopy
Biological · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 40 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 16, 2025 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to the Experimental Preventive HIV Vaccine, EP HIV-1090, in Healthy, HIV-1 Uninfected Adults

NCT00141024
View directory record Official record
Conditions
HIV Infections
Interventions
EP HIV-1043, EP HIV-1090
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
3
States / cities
San Francisco, California • Baltimore, Maryland • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a New HIV Vaccine: HIV CTL MEP

NCT00076037
View directory record Official record
Conditions
HIV Infections
Interventions
HIV CTL MEP administered with RC529-SE adjuvant, GM-CSF
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2006
U.S. locations
7
States / cities
Birmingham, Alabama • San Francisco, California • Baltimore, Maryland + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Jul 23, 2026, 2:22 PM EDT
Completed Phase 1 Interventional

Experimental PfSPZ Vaccine in Adults Without Malaria

NCT01441167
View directory record Official record
Conditions
Malaria, Prevention and Control, Acquired Immunity
Interventions
PfSPZ
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 4, 2018 · Synced Jul 23, 2026, 2:22 PM EDT