Meningitis

Meningitis is a potentially fatal inflammation of the meninges, or membranes, covering the brain and spinal cord. The causative organisms, usually bacterial or viral, gain access to the cerebrospinal fluid and follow the space around vessels. The epidemic disease called cerebrospinal meningitis is caused by the meningococcus bacterium, Neisseria meningitidis, a spherical organism that inhabits