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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Flavivirus Infections Clear all
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Trial of Yellow Fever Inactivated Vaccine

NCT00995865
View directory record Official record
Conditions
Yellow Fever
Interventions
XRX-001 Inactivated yellow fever vaccine, Placebo
Biological
Lead sponsor
GE Healthcare
Industry
Eligibility
18 Years to 49 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated May 4, 2016 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety of Three Formulations of Dengue Vaccines in Healthy Adults Aged 18 to 45 Years in the US

NCT00617344
View directory record Official record
Conditions
Dengue Fever, Dengue Hemorrhagic Fever, Dengue Virus
Interventions
Tetravalent CYD Dengue Vaccine , 5555 formulation, Tetravalent CYD Dengue Vaccine , 5553 formulation, Tetravalent CYD Dengue Vaccine, 4444 formulation
Biological
Lead sponsor
Sanofi
Industry
Eligibility
18 Years to 45 Years
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
5
States / cities
Hoover, Alabama • San Diego, California • Vallejo, California + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2019 · Synced Jul 22, 2026, 8:27 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Phase 1 Challenge Study Using rDEN2delta30-7169 to Evaluate Host-Pathogen Interactions in Primary, Homotypic, and Heterotypic Dengue Virus Infection

NCT07706686
View directory record Official record
Conditions
Healthy Volunteers, Dengue, Human Challenge Trial
Interventions
rDEN2delta30-7169
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Vaccine to Prevent West Nile Virus Disease

NCT00106769
View directory record Official record
Conditions
Healthy, West Nile Fever, Healthy Volunteer, HV
Interventions
VRC-WNVDNA017-00-VP
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety of Tetravalent Dengue Vaccine (TDV) Administered With a Yellow Fever Vaccine in Adults

NCT03342898
View directory record Official record
Conditions
Dengue
Interventions
YF-17D, TDV, Placebo
Biological · Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 60 Years
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
11
States / cities
Mobile, Alabama • Pomona, California • Meridian, Idaho + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 7, 2020 · Synced Jul 22, 2026, 8:27 AM 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 22, 2026, 8:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Defining Skin Immunity of a Bite of Key Insect Vectors in Humans

NCT03641339
View directory record Official record
Conditions
Zika, Dengue, Malaria, Chikungunya, Leishmaniasis
Interventions
One vector feeding, Four vector feeding
Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 7, 2021 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response to Two Doses of a Dengue Virus Vaccine Administered 12 Months Apart

NCT01782300
View directory record Official record
Conditions
Dengue
Interventions
TV003 Vaccine, Placebo 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
2013 – 2016
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jun 13, 2017 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Study of Varying Injection Schedules of TDENV-PIV Vaccine With AS03B Adjuvant and Placebo in Healthy US Adults

NCT02421367
View directory record Official record
Conditions
Dengue
Interventions
TDENV-PIV with AS03B adjuvant. Placebo: 0.9% Sodium Chloride Solution.
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
20 Years to 49 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
2
States / cities
Baltimore, Maryland • Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 24, 2019 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of the Live Attenuated Zika Vaccine rZIKV/D4Δ30-713 in Flavivirus-naïve Adults

NCT03611946
View directory record Official record
Conditions
Zika Virus
Interventions
Single dose of rZIKV/D4Δ30-713 (10^3 PFU) via subcutaneous injection (0.5ml), Single dose of placebo via subcutaneous injection (0.5ml)., Single dose of rZIKV/D4Δ30-713 (10^4 PFU) via subcutaneous injection (0.5ml)
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
2018 – 2022
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Aug 4, 2025 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response of a 2-dose Regimen of rDEN1delta30 Dengue Virus Vaccine

NCT00473135
View directory record Official record
Conditions
Dengue
Interventions
rDEN1delta30, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 12, 2010 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

VRC 705: A Zika Virus DNA Vaccine in Healthy Adults and Adolescents

NCT03110770
View directory record Official record
Conditions
Zika Virus, Zika Virus Infection, Virus Diseases, Flavivirus Infections, Flaviviral Diseases, Flaviviridae Infections, RNA Virus Infections
Interventions
VRC-ZKADNA090-00-VP, VRC-PBSPLA043-00-VP
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
15 Years to 35 Years
Enrollment
2,428 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
3
States / cities
Miami, Florida • Edinburg, Texas • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 30, 2024 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

TDENV PIV and LAV Dengue Prime-boost Strategy

NCT02239614
View directory record Official record
Conditions
Dengue
Interventions
TDENV-LAV, TDENV-PIV 4 µg + alum adjuvant
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 49 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 14, 2018 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

ZIKA Vaccine in Naive Subjects

NCT02952833
View directory record Official record
Conditions
Zika Virus Infection
Interventions
Saline, Zika Virus Purified Inactivated Vaccine (ZPIV)
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 28, 2025 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Effectiveness of a Dengue Virus Vaccine in Healthy Adults

NCT02021968
View directory record Official record
Conditions
Dengue
Interventions
TetraVax-DV-TV003, rDEN2∆30-7169, Placebo
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
2013 – 2015
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Dec 14, 2015 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study to Determine the Safety of AV-1, an Antibody Being Developed for Treatment of Dengue, in Healthy Volunteers

NCT04273217
View directory record Official record
Conditions
Healthy Volunteers
Interventions
AV-1, Placebo
Drug
Lead sponsor
AbViro LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 30, 2022 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Protective Efficacy of a Single Dose of the Live Attenuated Tetravalent Dengue Vaccine TV005 to Protect Against Infection With rDEN3Δ30

NCT02873260
View directory record Official record
Conditions
Dengue
Interventions
TetraVax-DV-TV005, rDEN3Δ30, Placebo
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
2016 – 2017
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Mar 7, 2018 · Synced Jul 22, 2026, 8:27 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Vaccine Study for Tick-Borne Encephalitis Virus (TBEV)

NCT01031537
View directory record Official record
Conditions
Tick-Borne Encephalitis, Encephalitis, Tick-Borne, Tick-Borne Disease, Glycoprotein E, Flavivirus, NSI Protein, Flavivirus
Interventions
FSME-IMMUN 0.5ml Baxter
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 100 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2016
U.S. locations
2
States / cities
Bethesda, Maryland • Hamilton, Montana
Source: ClinicalTrials.gov public record
Updated Jul 4, 2018 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity Study of ChimeriVax West Nile Vaccine in Healthy Adults

NCT00746798
View directory record Official record
Conditions
West Nile Fever
Interventions
ChimeriVax-WN02 vaccine, Placebo
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
50 Years and older
Enrollment
479 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
15
States / cities
Anaheim, California • Colorado Springs, Colorado • South Miami, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2015 · Synced Jul 22, 2026, 8:27 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Neurodevelopmental Outcomes in ZIKV-Exposed Children

NCT04398901
View directory record Official record
Conditions
Zika Virus, Congenital Zika Syndrome, Congenital Infection, Child Development
Interventions
Neurodevelopmental assessments
Other
Lead sponsor
Children's National Research Institute
Other
Eligibility
3 Years to 7 Years
Enrollment
204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 2, 2025 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of ChimeriVax-WN02 West Nile Vaccine in Healthy Adults

NCT00442169
View directory record Official record
Conditions
West Nile Fever
Interventions
ChimeriVax-WN02 Low Dose, ChimeriVax-WN02 Medium Dose, ChimeriVax-WN02 High Dose, 0.9% Saline solution, 0.9 % NaCl solution
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
208 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
5
States / cities
Phoenix, Arizona • Idaho Falls, Idaho • Lenexa, Kansas + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Dengue 4 Human Infection Model (Dengue CVD 11000; DHIM-4)

NCT05268302
View directory record Official record
Conditions
Dengue
Interventions
Dengue 4 Live Virus Human Challenge (DENV-4-LVHC) - Low Dose, Dengue 4 Live Virus Human Challenge (DENV-4-LVHC) - Low Dose - Homologous Rechallenge
Biological
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 16, 2025 · Synced Jul 22, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Trial of an Inactivated Yellow Fever Virus Vaccine

NCT05172544
View directory record Official record
Conditions
Yellow Fever
Interventions
HydroVax-002 YFV, Placebo
Biological · Other
Lead sponsor
Najit Technologies, Inc.
Industry
Eligibility
18 Years to 49 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Jul 22, 2026, 8:27 AM EDT
Active, not recruiting Phase 3 Interventional

INTERCEPT Blood System for RBCs Study in Regions at Potential Risk for Zika Virus Transfusion-Transmitted Infections

NCT03037164
View directory record Official record
Conditions
Anemia
Interventions
INTERCEPT Blood System for Red Blood Cells, Conventional (Control)
Device
Lead sponsor
Cerus Corporation
Industry
Eligibility
4 Years and older
Enrollment
692 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
12
States / cities
Phoenix, Arizona • New Haven, Connecticut • Jacksonville, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Jul 22, 2026, 8:27 AM EDT