Viral meningitis.

Enteroviruses account for 85 to 95% of all cases of aseptic meningitis, but the arboviruses and herpes simplex virus are also important etiologic agents. Mumps, lymphocytic choriomeningitis virus, herpes zoster, human herpesvirus type 6, and influenza viruses are rare causes of meningitis. The virology, pathogenesis, epidemiology, clinical manifestations, diagnostic studies, and established and potential antiviral therapies for viral meningitis are discussed. A differential diagnosis of the aseptic meningitis syndrome is provided.