Wikipedia
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.
Usage examples of "neisseria".
Bullhead clap was the moniker assigned to cases where the Neisseria organism infected the inner foreskin of uncircumcised males as well as the urethra, its normal habitat.
Pelvic Inflammatory Disease, usually infection of the fallopian tubes by Neisseria gonococcus, the agent of gonorrhea.