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immunization

Meningitis is inflammation of the meninges, (coverings of the brain and spinal cord); hence the term cerebrospinal. Typically, the central nervous system (CNS) is well protected by the skull, the meninges and the blood – brain barrier. But when an organism evades these structures, it spreads fast because of lack of defense mechanism within the CNS. Meningitis is caused by bacteria, viruses, fungi, even protozoa. However, the bacterial meningitis is more lethal because it affects every structure in the CNS (including the nerves, blood vessels, the brain mass, and so

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