Neisseria
| Neisseria | |
|---|---|
 |
|
| Fluorescent antibody stain of Neisseria gonorrhoeae. | |
| Scientific classification | |
| Kingdom: | Bacteria |
| Phylum: | Proteobacteria |
| Class: | Betaproteobacteria |
| Order: | Neisseriales |
| Family: | Neisseriaceae |
| Genus: |
Neisseria Trevisan, 1885 |
| Species | |
|
N. animalis |
|
N. animalis
N. animaloris
N. bacilliformis
N. canis
N. cinerea
N. dentiae
N. elongata
N. flava
N. flavescens
N. gonorrhoeae
N. iguanae
N. lactamica
N. macacae
N. meningitidis
N. mucosa
N. oralis
N. perflava
N. pharyngis
N. polysaccharea
N. shayeganii
N. sicca
N. subflava
N. wadsworthii
N. weaveri
N. zoodegmatis
Neisseria is a large genus of bacteria that colonize the mucosal surfaces of many animals. Of the 11 species that colonize humans, only two are pathogens, N. meningitidis and N. gonorrhoeae. Most gonoccocal infections are asymptomatic and self-resolving, and epidemic strains of the meningococcus may be carried in >95% of a population where systemic disease occurs at <1% prevalence.
Neisseria species are Gram-negative bacteria included among the proteobacteria, a large group of Gram-negative forms. Neisseria diplococci resemble coffee beans when viewed microscopically.
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