Neisseria is a genus of bacteria, included among the proteobacteria, a large group of gram-negative forms. Neisseria are gram-negative diplococci which resemble coffee beans when viewed microscopicaly. The genus includes the species

• N. gonorrhoeae, which causes gonorrhoea, and

• N. meningitidis, 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:

• Neisseria flavescens

• Neisseria sicca

References

Proteobacteria

Neisseria | Neisseria gonorrhea | Neisseria | Најсерије