“…Influenza-associated encephalopathy, which occurs at the height of illness and may be fatal, has been described by many investigators [Dunbar et al, 1958;Flewett and Hoult, 1958;McConkey et al, 1958;Delorme and Middleton, 1979;Protheroe and Mellor, 1991;Murphy and Webster, 1996]. The cerebrospinal fluid (CSF) is usually normal, the brain shows severe congestion at autopsy, and histological changes are minimal [Murphy and Webster, 1996].…”