Valneva Reports Positive Phase 2 Results in Children for its Chikungunya Vaccine and Announces Phase 3 Dose Decision

Saint-Herblain (France), January 22, 2025 – Valneva SE (Nasdaq: VALN; Euronext Paris: VLA) today announced positive results for its Phase 2 clinical trial evaluating the safety and immunogenicity of two different dose levels of its single-shot chikungunya vaccine, IXCHIQ^®, in 304 children. Partially funded by the Coalition for Epidemic Preparedness Innovations (CEPI), with support from the European Union, the trial is intended to support a pivotal Phase 3 study in children, which the Company expects to initiate in the fourth quarter of 2025, with the objective to extend the product label to this age group.