The Neisseriaceae are a family^[1] of Proteobacteria, given their own order. While many organisms in the family are mammalian commensals or part of the normal flora, the genus Neisseria includes 2 important human pathogens, specifically those responsible for gonorrhea (caused by Neisseria gonorrhoeae) and many cases of meningitis ("meningococcal meningitis", caused by Neisseria meningitidis). As a group, Neisseriaceae are strictly aerobic, Gram-negative, occur mainly in pairs (diplococci), and typically do not have flagella.

References

• Bacteria of Medical Importance in Todar's Online Textbook of Bacteriology.

• Madigan, Michael; Martinko, John (editors) (2005). Brock Biology of Microorganisms (11th ed. ed.). Prentice Hall. ISBN 0-13-144329-1.

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

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