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Valneva's chikungunya vaccine shows 95% effectiveness four years post-dose, with no safety issues and lasting protection across all ages.
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.
No new safety concerns were reported through two years of follow-up.
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.
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.
La vacuna contra la chikungunya de Valneva muestra una eficacia del 95% cuatro años después de la dosis, sin problemas de seguridad y con protección duradera en todas las edades.