LAUSR

A 40-year-old man presented with altered mentation, preceded a few days earlier by a 38°C fever and shortness of breath. He was diagnosed “....influenza A pneumonia, of the H3N2 subtype, with parainfectious...” hemorrhagic encephalitis and required intubation for hypoxia and depressed consciousness. Brain MRI showed numerous hemorrhages (figure 1). He received oseltamivir, switched to peramivir for better gut absorption. He was discharged to rehabilitation 1 month later. At 6-month follow-up (figure 2), he had residual deficits in memory and concentration. Montreal Cognitive Assessment score was 28/30. He returned to full-time work as a financial manager at 9 months, and felt subjective normal cognition at 1.5 years after onset.