C N S infections are caused by Protozoans, Bacterial, Viral, Prionic, Fungal and post infectious diseases of Nervous systems. Malaria, Primary Amoebic meningoencephalitis and toxoplasmosis protozoans cause encephalitis. Tuberculosis, Leprosy, Neurosyphilis, Bacterial meningitis, late stage of Lyme disease, Brain abscess, Neuro Borreliasis, Streptococcus pneumonia, Streptococcus agalactiae, Neisseria meningitis, Haemophillus influenza, Listeria monocytogenes cause bacterial meningitis. Viruses like Esteren equine encephalitis, Saint Louis, Westnile, Japanese, Herpes simplex virus, Rabies virus, California virus, Varicella virus, Measles encephalitis, Poliomyelitis, Slow virus encephalitis cause meningitis. Creutzfeldt-Jacob disease, Fatel familial insomnia and Kuru etc Pr ionic diseases cause meningitis. Cryptococcal meningitis, brain abscess, spinal epidermal infections also produce meningitis. Bacterial meningitis is very serious and deadly. Death can occur in as little as few hours. Most people recover from meningitis. However permanent disabilities can result from infection.