A Seasonal Cause of Encephalitis: Influenza Virus A (H3N1) Infection
KeywordsInfluenza A (H3N1), encephalitis, influenza-associated encephalopathy
Influenza virus infection can have a range of presentations, from asymptomatic to life-threatening disease. We present the case of a 57-year-old woman with a known history of schizophrenia (controlled with medication) who presented to our emergency department in a coma after experiencing a seizure. She had reported flu-like symptoms in the previous week, which evolved to dyspnoea and altered mental status culminating in seizures and coma. Influenza virus A (H3N1) was identified in the cerebrospinal fluid. Although a rare cause of encephalitis, the influenza virus should be considered in the differential diagnosis, especially during epidemics.
Issue: 2021: Vol 8 No 2 (view)