By Stephanie Brown HealthDay ReporterMONDAY, Aug. 25, 2025 (HealthDay News) -- The U.S. Food and Drug Administration is suspending the biologics license for the live-attenuated chikungunya vaccine, Ixchiq, in the United States. The move comes after reports of serious side effects in older adults similar to the symptoms of chikungunya virus.

The US Food and Drug Administration (FDA) announced late last week that it has suspended the license for French drugmaker Valneva's chikungunya vaccine, saying that continued administration of the vaccine to the public would pose a danger to health.

Less than three weeks after lifting a pause on the use of Valneva’s chikungunya vaccine Ixchiq, the FDA has done an about-face, banning the use of the shot in the United States. | Less than three weeks after lifting a pause on the use of Valneva’s chikungunya vaccine Ixchiq,