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Valneva ADRs plunged after CDC probed IXCHIQ safety in Feb. 2025, then fell further in Aug. 2025 when FDA suspended the vaccine’s application.
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CDC, then FDA flagged safety issues with IXCHIQ; Valneva ADRs fell 13.6% in Feb. and another 19% in Aug. 2025 on suspension news.
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Valneva’s IXCHIQ vaccine faced CDC/FDA safety concerns; disclosures in 2025 triggered ADR declines of 13.6% and 19%, harming investors.