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ClinicalTrials.gov public records Last synced Oct 19, 2026, 4:54 PM EDT

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Showing 1–4 of 4 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: VLA1553 Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Demonstrate Consistency of Three Lots of a Live-attenuated Chikungunya Virus Vaccine Candidate in Healthy Adults

NCT04786444
View directory record Official record
Conditions
Chikungunya Virus Infection
Interventions
Biological Vaccine VLA1553
Biological
Lead sponsor
Valneva Austria GmbH
Industry
Eligibility
18 Years to 45 Years
Enrollment
409 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
12
States / cities
Coral Gables, Florida • Fort Myers, Florida • Ponte Vedra, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Oct 19, 2026, 4:54 PM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers Results available

Antibody Persistence And Long Term Safety Of A Chikungunya Virus Vaccine (VLA1553)

NCT04838444
View directory record Official record
Conditions
Chikungunya Virus Infection
Interventions
VLA1553
Biological
Lead sponsor
Valneva Austria GmbH
Industry
Eligibility
18 Years and older
Enrollment
363 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2031
U.S. locations
10
States / cities
Phoenix, Arizona • Hallandale, Florida • Chicago, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Oct 19, 2026, 4:54 PM 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 29, 2019 · Synced Oct 19, 2026, 4:54 PM 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 28, 2023 · Synced Oct 19, 2026, 4:54 PM EDT