Antibody levels remained high at 96% seroresponse in line with the two-year persistence data This long-lasting antibody persistence was comparable in older (65+) and younger adults Saint-Herblain (France), December 3, 2024 – Valneva SE (Nasdaq: VALN; Euronext Paris: VLA), a specialty vaccine company, today reported positive antibody persistence data three years after vaccination with a single dose of its chikungunya vaccine IXCHIQ®. The results are in line with Valneva’s expectations for this vaccine, confi ...