Neurovirology is the study of neurologic disorders caused by neurotropic viruses. This issue of Neurologic Clinics features the latest clinical advances in this important subspecialty, including articles on such topics as the pathogenesis and diagnosis of viral infections of the nervous system, aseptic meningitis and viral myelitis, arboviruses, rabies, HIV neuropathy and myelopathy, herpetic infections, Epstein-Barr virus, post-infectious encephalomyelitis, and emerging neurotropic viruses.