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Valneva and Instituto Butantan Announce Initiation of a Pilot Vaccination Campaign in Brazil with Single-Shot Chikungunya Vaccine IXCHIQ®

Lyon (France), Sao Paulo, (Brazil), February 3, 2026 –Valneva SE (NASDAQ:VALN, PARIS:VLA), a specialty vaccine company and Instituto Butantan, one of the world's largest biomedical research centers, today announced the