Homonymous hemianopia following yellow fever vaccination: a case of acute disseminated encephalomyelitis.

A 42-year-old Caucasian man developed left homonymous hemianopia 16 days after receipt of a live-attenuated 17D-204 yellow fever virus vaccine. MRI imaging of the brain revealed right occipital and left parieto-occipital lesions with marked hyperintensity consistent with demyelination, and a diagnosis of yellow fever vaccine-associated acute disseminated encephalomyelitis was made.