EXHIBIT 99.1 Valneva to Present on its Chikungunya Vaccine IXCHIQ®, Participate in Multiple Events at the 24th World Vaccine Congress in Washington D.C. Saint-Herblain (France), March 21, 2024 – Valneva SE (Nasdaq: VALN; Euronext Paris: VLA), a specialty vaccine company, today announced it will present on its single-shot chikungunya vaccine, IXCHIQ, moderate a roundtable on the Zika and chikungunya viruses, and participate in a panel discussion on efforts to eradicate chikungunya at the 24th World Vaccine C ...