Trial Profile

A Randomized, Observer-blinded, Dose Response Phase 2 Trial to Assess the Safety and Immunogenicity of Two Different Dose Levels of a Live-attenuated Chikungunya Virus Vaccine Candidate (VLA1553) in Healthy Children Aged 1 to 11 Years

Status: Completed

Phase of Trial: Phase II

Latest Information Update: 10 Feb 2026

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At a glance

Drugs VLA 1553 (Primary) ; Meningococcal vaccine groups A B C Y W-135 conjugate
Indications Chikungunya virus infections
Focus Adverse reactions
Sponsors Valneva

10 Dec 2025 Results presented in the Valneva Media Release.
08 Aug 2025 Status changed from active, no longer recruiting to completed.
05 Jun 2025 According to a Valneva media release, the trial is intended to support a pivotal Phase 3 study in children, which the Company expects to initiate in the first quarter of 2026,

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