There are five main causes of infections of the central nervous system (CNS): bacterial, viral, fungal, protozoal, and prionic. Fungal Cryptococcal meningitis Brain abscess Spinal epidural infection Protozoal Toxoplasmosis Malaria Primary amoebic meningoencephalitis Granulomatous amoebic encephalitis Amoebic brain abscess Viral Viral meningitis Eastern equine encephalitis St Louis encephalitis Japanese encephalitis West Nile encephalitis Tick-borne encephalitis Herpes simplex encephalitis Rabies California encephalitis virus Varicella-zoster encephalitis La Crosse encephalitis Measles encephalitis Nipah virus encephalitis Poliomyelitis Slow virus infections, which include: Subacute sclerosing panencephalitis Progressive multifocal leukoencephalopathy Acquired immunodeficiency syndrome (AIDS) Prionic Creutzfeldt–Jakob disease and its variant Gerstmann–Sträussler–Scheinker syndrome Kuru Variably protease-sensitive prionopathy Familial spongiform encephalopathy Post-infectious diseases of the central nervous system PANDAS (controversial hypothesis) Sydenham's chorea Acute disseminated encephalomyelitis Guillain–Barré syndrome See also Central nervous system viral disease Encephalitis Meningitis Neuroepidemiology Neurovirology References Central nervous system disorders Infectious diseases