The Los Angeles County Department of Public Health (LAC DPH) issued a health advisory on February 27, 2025. This advisory shares information about pediatric influenza-associated encephalopathy and encephalitis.
Key Messages
The Centers for Disease Control and Prevention is investigating reports of pediatric influenza-associated encephalopathy and encephalitis (IAE), including acute necrotizing encephalopathy (ANE).
ANE is a rare, potentially fatal brain disorder characterized by rapid neurologic deterioration, including seizures and coma. Patients diagnosed with ANE often have a recent history of viral infection, including influenza.
Healthcare providers should report any current suspected cases of IAE or ANE in patients under 21 years of age, as well as any past cases that have occurred since October 1, 2024, to Public Health.
Read the full LAC DPH Health Advisory: Pediatric Influenza-Associated Encephalopathy and Encephalitis, including Acute Necrotizing Encephalopathy.