Saint-Herblain (France), August 28, 2023 – Valneva SE (Nasdaq: VALN; Euronext Paris: VLA), a specialty vaccine company, today reported positive initial Phase 3 safety data in adolescents for its single-dose chikungunya virus (CHIKV) vaccine candidate VLA1553. Immunogenicity data for the trial are expected in November 2023. Funded by the Coalition for Epidemic Preparedness Innovations (CEPI) and conducted in collaboration with Instituto Butantan, the VLA1553-321 adolescent trial is intended to su