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flag Valneva's chikungunya vaccine shows 95% effectiveness four years post-dose, with no safety issues and lasting protection across all ages.

flag Valneva's chikungunya vaccine IXCHIQ® maintained a 95% seroresponse rate four years after a single dose, with neutralizing antibodies remaining protective in all age groups, including adults 65 and older, according to long-term data from the VLA1553-303 trial. flag No new safety concerns were reported through two years of follow-up. flag The vaccine’s durable immune response supports its potential to prevent outbreaks of the mosquito-borne disease, which has spread to over 110 countries and caused over 3.7 million cases in the Americas since 2013. flag The company plans to monitor antibody persistence for up to ten years and is expanding global access through partnerships with CEPI and the Serum Institute of India.

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