FDA Suspends Ixchiq Vaccine After 1.5 Years of Safety Data Showed Serious Risk
Update: 2025-08-27
Description
On Aug. 25, the FDA informed the public that the agency officially suspended its approval for Valneva’s Ixchiq vaccine.
Ixchiq is a vaccine for Chikungunya, a mosquito-borne disease. The vaccine was initially approved to be administered in the United States in November 2023, under the FDA’s fast-tracked accelerated approval pathway.
Let’s go through what the data showed, as well as why the FDA decided this move to stop the vaccine was necessary.
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