Valneva and Instituto Butantan Initiate Pilot Vaccination Campaign with Chikungunya Vaccine IXCHIQ® in Brazil.

Valneva and Instituto Butantan have initiated a pilot vaccination campaign in Brazil using Valneva's single-shot chikungunya vaccine, IXCHIQ. The program will serve as the basis for post-marketing commitment studies evaluating the effectiveness and safety of IXCHIQ in a real-world setting. Up to 500,000 doses of IXCHIQ will be donated to the Brazilian Ministry of Health, and the program aims to achieve 20-40% vaccine coverage within the target population. The World Health Organization has called for urgent action to prevent a potential major chikungunya epidemic, and Brazil has reported the highest number of chikungunya cases worldwide.