viral meningitis and encephalitis

acute anatomy bacteria bacterial brain central coli concept conceptual cord demystifying disease encephalitis epidemic escherichia haemophilus headache health human illustration infection infectious inflammation influenzae listeria medical medicine membranes meninges meningitidis meningitis meningococcal meningococcus meningoencephalitis microbe microorganism microscopic monocytogenes neisseria nervous neurology nile nipah pneumoniae protective science spinal streptococcus viral virus