Medical Subject Headings

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MESH/D009345
http://purl.bioontology.org/ontology/MESH/D009345
Preferred Name

Neisseria meningitidis

Definitions
A species of gram-negative, aerobic BACTERIA. It is a commensal and pathogen only of humans, and can be carried asymptomatically in the NASOPHARYNX. When found in cerebrospinal fluid it is the causative agent of cerebrospinal meningitis (MENINGITIS, MENINGOCOCCAL). It is also found in venereal discharges and blood. There are at least 13 serogroups based on antigenic differences in the capsular polysaccharides; the ones causing most meningitis infections being A, B, C, Y, and W-135. Each serogroup can be further classified by serotype, serosubtype, and immunotype.
Synonyms
Meningococcus
Micrococcus intracellularis
Neisseria weichselbaumii
Micrococcus meningitidis
Diplokokkus intracellularis meningitidis
Micrococcus meningitidis cerebrospinalis
Type http://www.w3.org/2002/07/owl#Class
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