<unk> , also known as gonococci (plural), or gonococcus (singular), is a species of Gram-negative coffee bean-shaped diplococci bacteria responsible for the sexually transmitted infection gonorrhea.<unk>  was first described by Albert Neisser in 1879.
Neisseria gonorrhoeae
Chlamydia trachomatis
Chlamydophila trachomatis
Gardnerella vaginalis
Klebsiella rhinoscleromatis
Trichomonas vaginalis
Haemophilus ducreyi
Ureaplasma urealyticum