Jump to navigation Jump to search
Fluorescent antibody stain of Neisseria gonorrhoeae.
Fluorescent antibody stain of Neisseria gonorrhoeae.
Scientific classification
Kingdom: Bacteria
Phylum: Proteobacteria
Class: Beta Proteobacteria
Order: Neisseriales
Family: Neisseriaceae
Genus: Neisseria
Trevisan, 1885

WikiDoc Resources for Neisseria


Most recent articles on Neisseria

Most cited articles on Neisseria

Review articles on Neisseria

Articles on Neisseria in N Eng J Med, Lancet, BMJ


Powerpoint slides on Neisseria

Images of Neisseria

Photos of Neisseria

Podcasts & MP3s on Neisseria

Videos on Neisseria

Evidence Based Medicine

Cochrane Collaboration on Neisseria

Bandolier on Neisseria

TRIP on Neisseria

Clinical Trials

Ongoing Trials on Neisseria at Clinical

Trial results on Neisseria

Clinical Trials on Neisseria at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Neisseria

NICE Guidance on Neisseria


FDA on Neisseria

CDC on Neisseria


Books on Neisseria


Neisseria in the news

Be alerted to news on Neisseria

News trends on Neisseria


Blogs on Neisseria


Definitions of Neisseria

Patient Resources / Community

Patient resources on Neisseria

Discussion groups on Neisseria

Patient Handouts on Neisseria

Directions to Hospitals Treating Neisseria

Risk calculators and risk factors for Neisseria

Healthcare Provider Resources

Symptoms of Neisseria

Causes & Risk Factors for Neisseria

Diagnostic studies for Neisseria

Treatment of Neisseria

Continuing Medical Education (CME)

CME Programs on Neisseria


Neisseria en Espanol

Neisseria en Francais


Neisseria in the Marketplace

Patents on Neisseria

Experimental / Informatics

List of terms related to Neisseria

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


Neisseria is a genus of bacteria included among the proteobacteria, a large group of Gram-negative forms. Neisseria are diplococci that resemble coffee beans when viewed microscopically.[1] The genus includes the species N. gonorrhoeae (also called the gonococcus), which causes gonorrhoea, and N. meningitidis (also called the meningococcus), one of the most common causes of bacterial meningitis and the causative agent of meningococcal septicaemia.

This genus also contains several, believed to be nonpathogenic species, like:


The genus Neisseria is named after the German bacteriologist Albert Neisser, who discovered its first example, Neisseria gonorrheae, the pathogen which causes the human disease gonorrhea. Neisser also co-discovered the pathogen that causes leprosy, Mycobacterium leprae. These discoveries were made possible by the development of new staining techniques which he helped to develop.

Biochemical Indentification

All the medically significant species of Neisseria are positive for both catalase and oxidase. Different Neisseria species can be identified by the sets of sugars from which they will produce acid. For example, N. gonorrheae makes acid from only glucose, however N. meningitidis produces acid from both glucose and maltose.


  1. Ryan KJ; Ray CG (editors) (2004). Sherris Medical Microbiology (4th ed. ed.). McGraw Hill. ISBN 0-8385-8529-9.