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Showing 1–13 of 13 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo (two doses), priming Clear all
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study to Assess the Immunogenicity, Tolerability and Safety of a Malaria Vaccine and Also Its Protective Efficacy in a Malaria Challenge Model

NCT01397227
View directory record Official record
Conditions
Malaria
Interventions
Ad35.CS.01/Ad26.CS.01 low dose (1 x 10^10 vp), Ad 35.CS.01/Ad 26.CS.01 high dose (5 x 10^10 vp), Placebo
Biological
Lead sponsor
Crucell Holland BV
Industry
Eligibility
18 Years to 50 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 6, 2012 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Safety, Tolerability and Immunogenicity Study of 2 Different Regimens of Tetravalent Ad26.Mos4.HIV Prime Followed by Boost With Tetravalent Ad26.Mos4.HIV Along With Either Clade C gp140 Plus Adjuvant OR With a Combination of Mosaic and Clade C gp140 Plus Adjuvant in Healthy HIV Uninfected Adults

NCT02935686
View directory record Official record
Conditions
Healthy
Interventions
Ad26.Mos4.HIV, Clade C gp140 plus adjuvant, Clade C gp140/Mosaic gp140 plus adjuvant, Placebo, gp140 HIV Bivalent Vaccine
Biological · Other
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years and older
Enrollment
155 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
11
States / cities
Birmingham, Alabama • San Francisco, California • Decatur, Georgia + 5 more
Source: ClinicalTrials.gov public record
Updated May 24, 2025 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety, Tolerability and Immunogenicity Study of 2-dose Heterologous Regimens for Ebola Vaccines Ad26.ZEBOV/MVA-BN-Filo

NCT02598388
View directory record Official record
Conditions
Hemorrhagic Fever, Ebola
Interventions
Ad26.ZEBOV, MVA-BN-Filo, Placebo
Biological
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years to 70 Years
Enrollment
578 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Sep 25, 2026, 10:19 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

A Trial Evaluating the Safety and Effects of an RNA Vaccine ARCT-021 in Healthy Adults

NCT04668339
View directory record Official record
Conditions
Covid19, SARS-CoV Infection, Corona Virus Infection
Interventions
ARCT-021 single dose priming, ARCT-021 two lower dose priming, ARCT-021 two higher dose priming, Placebo (two doses), priming, Randomized booster, Placebo booster
Biological
Lead sponsor
Arcturus Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
581 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
12
States / cities
Chandler, Arizona • Tucson, Arizona • San Diego, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 14, 2025 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 1 Interventional

A Study of 2 Different Regimens of Tetravalent Ad26.Mos4.HIV Prime Followed by Boost With Modified Vaccinia Ankara (MVA)-Mosaic OR Ad26.Mos4.HIV Plus a Combination of Mosaic and Clade C gp140 Protein in Human Immunodeficiency Virus (HIV) Type 1 Infected Adults on Suppressive Antiretroviral Treatment

NCT03307915
View directory record Official record
Conditions
Human Immunodeficiency Virus
Interventions
Ad26.Mos4.HIV, MVA-Mosaic, Clade C gp140 + Mosaic gp140, Placebo
Biological · Drug
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years to 60 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate Safety and Immunogenicity of One or Two Booster Vaccinations With H5N6 Influenza Vaccine in Adults Primed With H5N1 Influenza Vaccine or Unprimed

NCT05422326
View directory record Official record
Conditions
Influenza, Human, Influenza in Birds, Respiratory Tract Infections, Infections, Orthomyxoviridae Infections, RNA Virus Infections, Virus Diseases, Respiratory Tract Diseases
Interventions
aH5N6c on Day 1, aH5N6c on Day 22, Placebo on Day 22
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years and older
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
18
States / cities
Huntsville, Alabama • Tempe, Arizona • San Diego, California + 14 more
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Booster Trial to 07-0019 With A/Anhui/05 With and Without MF59

NCT00912496
View directory record Official record
Conditions
Influenza
Interventions
MF-59, A/Anhui/05, Placebo
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
637 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
10
States / cities
Atlanta, Georgia • Iowa City, Iowa • Baltimore, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated May 13, 2013 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1, First-in-human, Double-blinded, Randomized, Placebo-controlled Trial of a Zika Virus Purified Inactivated Vaccine (ZPIV) With Alum Adjuvant in Healthy Flavivirus-naive and Flavivirus-Primed Subjects.

NCT02963909
View directory record Official record
Conditions
Zika Virus Infection
Interventions
IXIARO, Placebo, YF Vax 17D Strain, Zika Virus Purified Inactivated Vaccine (ZPIV)
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 21, 2024 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study of LIPO-5 and ALVAC-HIV (vCP1452) as Possible HIV Vaccines

NCT00076063
View directory record Official record
Conditions
HIV Infections
Interventions
ALVAC-HIV (vCP1452), LIPO-5
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
174 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
11
States / cities
Birmingham, Alabama • Baltimore, Maryland • Boston, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate Safety, Tolerability, and Bioavailability of Subcutaneous Lirentelimab (AK002) in Adult Healthy Volunteers

NCT04324268
View directory record Official record
Conditions
Study Conducted in Healthy Volunteers
Interventions
lirentelimab (AK002), Placebo
Drug · Other
Lead sponsor
Allakos Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Edgewater, Florida
Source: ClinicalTrials.gov public record
Updated Apr 17, 2023 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Fluzone® Vaccine in Children Who Received 2 Doses of the 2005-2006 Fluzone Formulation.

NCT00390884
View directory record Official record
Conditions
Influenza
Interventions
Influenza Virus Vaccine, Fluzone®
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
11 Months to 14 Months
Enrollment
173 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
5
States / cities
Layton, Utah • Pleasant Grove, Utah • Provo, Utah + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity & Safety of GSK's Avian Flu Vaccine 1557484A Given to Adults Aged ≥18 Years

NCT00719043
View directory record Official record
Conditions
Influenza
Interventions
A/turkey H5N1 vaccine, Influenza A (H5N1) Virus Monovalent Vaccine, Adjuvanted (A/Indonesia), Placebo
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
841 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
10
States / cities
Denver, Colorado • Chicago, Illinois • Metairie, Louisiana + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 8, 2018 · Synced Sep 25, 2026, 10:19 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of a Live-attenuated Universal Flu Vaccine Followed by an Inactivated Universal Flu Vaccine

NCT03300050
View directory record Official record
Conditions
Influenza, Vaccine
Interventions
cH8/1N1 LAIV, AS03-adjuvanted cH5/1N1 IIV, cH5/1N1 IIV, AS03-adjuvanted cH8/1N1 IIV, Normal saline, Phosphate buffered saline (PBS)
Biological
Lead sponsor
PATH
Other
Eligibility
18 Years to 39 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
2
States / cities
Durham, North Carolina • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 20, 2021 · Synced Sep 25, 2026, 10:19 PM EDT