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FDA Suspends U.S. License of Chikungunya Vaccine

The FDA suspended Ixchiq's US license after reports of serious adverse events in older adults, including hospitalizations and deaths, prompting Valneva to halt US sales immediately.

  • US health authorities have suspended the licence for the Ixchiq vaccine against the chikungunya virus following reports of serious adverse events, the drug's French maker Valneva said.
  • Valneva obtained US approval for the vaccine in 2023, but reports of side effects have prompted reviews, in particular over its use in older patients, including by the European Medicines Agency this year.
  • Chikungunya is rarely fatal, though there is an increased risk of death for babies and the elderly, and symptoms, which include high fever and severe joint pain, are often debilitating.
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FDA Suspends U.S. License of Chikungunya Vaccine

Ixchiq has been linked to more than 20 serious adverse events resembling chikungunya illness

·New York, United States
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Lean Right

The Chikungunya vaccine from the Austrian-French manufacturer Valneva is no longer allowed to be sold due to side effects. Valneva's share collapsed strongly.

·Vienna, Austria
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According to reports, the vaccine of the Austrian-French manufacturer Valneva caused 21 hospital admissions and three deaths

·Vienna, Austria
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Center

The anti-chikungunya vaccine of the French-Austrian group Valneva was suspended in the United States, the company announced this Monday. The American health agency Food and Drug Administration cited "4 new cases of serious adverse reactions". This vaccine is one of the only available against this viral disease. - Chikungunya: the United States suspend the vaccine of Valneva after new adverse reactions (Health and well-being).

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The New Paper broke the news in on Monday, August 25, 2025.
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