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Showing 1–24 of 36 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Alphavirus Infections Clear all
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Safety and Immunogenicity Study of CHIKV VLP Vaccine in Children.

NCT07003984
View directory record Official record
Conditions
Chikungunya Virus
Interventions
CHIKV VLP vaccine, Placebo
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
1 Year to 11 Years
Enrollment
720 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
8
States / cities
Fountain Valley, California • Washington D.C., District of Columbia • Miami, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Sep 7, 2026, 2:10 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity Study of the Western Equine Encephalitis (WEE) Vaccine

NCT02466750
View directory record Official record
Conditions
Western Equine Encephalitis
Interventions
Western Equine Encephalitis (WEE) Vaccine
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Fort Deterick, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 10, 2021 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

VRC 313: A Trivalent Virus-like Particle (VLP) Encephalitis Vaccine (WEVEE) in Healthy Adults

NCT03879603
View directory record Official record
Conditions
Venezuelan Equine Encephalitis, Western Equine Encephalitis, Eastern Equine Encephalitis, Alphavirus Infections
Interventions
VRC-WEVVLP073-00-VP, VRC-GENMIX083-AL-VP
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 23, 2021 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Phase 1/2 Clinical Trial of an Alphavirus Replicon Vaccine for Influenza

NCT00440362
View directory record Official record
Conditions
Influenza
Interventions
AVX502, Placebo
Biological
Lead sponsor
AlphaVax, Inc.
Industry
Eligibility
18 Years to 40 Years
Enrollment
216 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 9, 2008 · Synced Sep 7, 2026, 2:10 AM EDT
Completed No phase listed Observational

Zika Virus and Related Arbovirus Infections in Deferred Blood Donors (ZVADD)

NCT02794181
View directory record Official record
Conditions
Zika Virus, Dengue Virus, Chikungunya Virus Infections
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 17, 2019 · Synced Sep 7, 2026, 2:10 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

Long-term Follow-up Study to Evaluate Safety and Immunogenicity of CHIKV VLP Single or Booster Vaccination

NCT06007183
View directory record Official record
Conditions
Chikungunya Virus Infection
Interventions
CHIKV VLP vaccine booster, Placebo booster
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
12 Years and older
Enrollment
715 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
24
States / cities
Mobile, Alabama • Tempe, Arizona • Melbourne, Florida + 20 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Assess the Safety and Immunogenicity of a Chikungunya Virus Vaccine Candidate (VLA1553) in Healthy Volunteers

NCT03382964
View directory record Official record
Conditions
Chikungunya
Interventions
VLA1553
Biological
Lead sponsor
Valneva Austria GmbH
Industry
Eligibility
18 Years to 45 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
2
States / cities
Huntsville, Alabama • Peoria, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 28, 2019 · Synced Sep 7, 2026, 2:10 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 Sep 7, 2026, 2:10 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Pivotal Study to Evaluate Safety and Immunogenicity of a Live-Attenuated Chikungunya Virus Vaccine Candidate in Adults

NCT04546724
View directory record Official record
Conditions
Chikungunya Virus Infection
Interventions
VLA1553, Placebo
Biological
Lead sponsor
Valneva Austria GmbH
Industry
Eligibility
18 Years and older
Enrollment
4,128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
44
States / cities
Chandler, Arizona • Phoenix, Arizona • Tempe, Arizona + 39 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of CHIKV VLP Vaccine PXVX0317 in Adults ≥65 Years

NCT05349617
View directory record Official record
Conditions
Chikungunya Virus
Interventions
CHIKV VLP/adjuvant, Placebo
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
65 Years and older
Enrollment
413 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
10
States / cities
Miami, Florida • Miami Lakes, Florida • St. Petersburg, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Sep 7, 2026, 2:10 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 1, 2012 · Synced Sep 7, 2026, 2:10 AM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity Study of Venezuelan Equine Encephalomyelitis (VEE) Vaccine as Booster Vaccine in Adults

NCT03531242
View directory record Official record
Conditions
Venezuelan Equine Encephalomyelitis
Interventions
0.5 mL Inactivated, Dried, C-84, TSI-GSD 205, Lot 7, Run 1
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Fort Deterick, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 15, 2021 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Phase 3 Trial of the VLP-Based Chikungunya Vaccine PXVX0317 (CHIKV VLP Vaccine)

NCT05072080
View directory record Official record
Conditions
Chikungunya Virus
Interventions
CHIKV VLP/adjuvant, Placebo
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
12 Years to 64 Years
Enrollment
3,258 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
47
States / cities
Huntsville, Alabama • Mobile, Alabama • Tempe, Arizona + 42 more
Source: ClinicalTrials.gov public record
Updated Aug 29, 2024 · Synced Sep 7, 2026, 2:10 AM EDT
Enrolling by invitation No phase listed Observational

Xpert® Tropical Fever Test on GeneXpert® Edge X System

NCT07520279
View directory record Official record
Conditions
Malaria Fever, Zika, Dengue Fever, Leptospirosis, Chikungunya Virus Infection
Interventions
Xpert Tropical Fever test
Diagnostic Test
Lead sponsor
Cepheid
Industry
Eligibility
14 Years and older
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase I Trial of Measles Vectored Chikungungya Vaccine

NCT03028441
View directory record Official record
Conditions
Chikungunya Virus Infection
Interventions
Placebo, VRC-CHKVLP059-00-VP
Other · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
3
States / cities
Atlanta, Georgia • Iowa City, Iowa • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 26, 2020 · Synced Sep 7, 2026, 2:10 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Safety, Tolerability and Immunogenicity of the Venezuelan Equine Encephalitis (VEE) Attenuated Live-Virus Vaccine

NCT00109304
View directory record Official record
Conditions
Venezuelan Equine Encephalitis
Interventions
VEE 3526
Biological
Lead sponsor
DynPort Vaccine Company LLC, A GDIT Company
Industry
Eligibility
18 Years to 40 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Sep 17, 2015 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Vaccination Trial of a Recombinant MVA-BN-WEV Vaccine in Healthy Adult Subjects

NCT04131595
View directory record Official record
Conditions
Equine Encephalitis
Interventions
MVA-BN-WEV Dose 1, MVA-BN-WEV Dose 2, MVA-BN-WEV Dose 3
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
18 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 19, 2020 · Synced Sep 7, 2026, 2:10 AM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

A Phase 1 Study Evaluating the Safety, Tolerability, and Immunogenicity of V4020 Vaccine in Healthy Volunteers

NCT07088822
View directory record Official record
Conditions
Venezuelan Equine Encephalitis, Venezuelan Equine Encephalitis Virus Infection
Interventions
V4020
Biological
Lead sponsor
Medigen, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 27, 2025 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Phase 1 Study of SAR440894 vs Placebo

NCT04441905
View directory record Official record
Conditions
Chikungunya Virus Infection
Interventions
Placebo, SAR440894
Other · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
3
States / cities
Orlando, Florida • Durham, North Carolina • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Sep 7, 2026, 2:10 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Venezuelan Equine Encephalitis Monovalent Virus-Like Particle Vaccine

NCT03776994
View directory record Official record
Conditions
Encephalitis, Encephalitis, Viral, Infectious Encephalitis, Virus Diseases, Encephalomyelitis, Venezuelan Equine, Brain Diseases, Central Nervous System Diseases, Central Nervous System Viral Diseases, Alphavirus Infections, Togaviridae Infections, RNA Virus Infections, Central Nervous System Infections, Encephalomyelitis, Physiological Effects of Drugs, Vaccines, Encephalomyelitis, Equine, Nervous System Diseases
Interventions
Vaccinations on Day 0, Day 28, and Day 140
Biological
Lead sponsor
SRI International
Industry
Eligibility
18 Years to 50 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Plymouth, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 22, 2021 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity Study of Eastern Equine Encephalitis (EEE) Vaccine

NCT00584805
View directory record Official record
Conditions
Eastern Equine Encephalitis
Interventions
Inactivated, Dried, TSI-GSD 104, EEE
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2017
U.S. locations
1
States / cities
Fort Deterick, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 23, 2019 · Synced Sep 7, 2026, 2:10 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Venezuelan Equine Encephalomyelitis Vaccine (VEE C-84) as a Booster to VEE TC-83

NCT00582088
View directory record Official record
Conditions
Venezuelan Equine Encephalomyelitis
Interventions
VEE C-84
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2021
U.S. locations
1
States / cities
Fort Deterick, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 10, 2021 · Synced Sep 7, 2026, 2:10 AM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

A Phase 2 Trial in Healthy Adult Participants of the Recombinant MVA-BN-WEV Vaccine

NCT06899802
View directory record Official record
Conditions
Encephalitis
Interventions
MVA-BN-WEV, Placebo
Biological · Other
Lead sponsor
Bavarian Nordic
Industry
Eligibility
18 Years to 50 Years
Enrollment
411 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
9
States / cities
Sacramento, California • Lilburn, Georgia • Lenexa, Kansas + 6 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Sep 7, 2026, 2:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of an HIV Vaccine (AVX101) in HIV Uninfected Volunteers in the United States and South Africa

NCT00063778
View directory record Official record
Conditions
HIV Infections
Interventions
AVX101, placebo
Biological · Other
Lead sponsor
AlphaVax, Inc.
Industry
Eligibility
18 Years to 60 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
5
States / cities
Baltimore, Maryland • New York, New York • Rochester, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2012 · Synced Sep 7, 2026, 2:10 AM EDT