Guillain-Barre syndrome after influenza vaccine administration: two adult cases.

We describe two adult cases of neurologic complications occurring after the administration of the influenza vaccine. The first case described is a 68 year-old man who experienced paresthesias of the upper and lower extremities two weeks after vaccination, and the second case was a 64 year-old female who exhibited paraplegia eighteen days after vaccination. Diagnosis of acute idiopathic demyelinating polyradiculopathy (Guillain-Barré syndrome) was made for both patients, and intravenous gammaglobulin therapy was given with marked improvement of the first case, but poor response on the second case.