FDA Requires Vaccine Makers to Include Febrile Seizure Warning on Flu Shot Labels
The U.S. Food and Drug Administration (FDA) notified six influenza vaccine manufacturers on Jan. 9, 2026 that they must add a warning about the risk of febrile (fever) seizures to their product information labels, citing newly identified postmarketing safety data. The notices, issued under the FDA’s statutory authority to mandate safety labeling changes, were sent […]