Neisseria gonorrhoeae, 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.
Symptoms of infection with N. gonorrhoeae differ, depending on the site of infection. Note also that 10% of infected males and 80% of infected females are asymptomatic.[citation needed. Infection of the genitals can result in a purulent (or pus-like) discharge from the genitals, which may be foul-smelling. Symptoms may include inflammation, redness, swelling, and dysuria. N. gonorrhoeae can also cause conjunctivitis, pharyngitis, proctitis or urethritis, prostatitis, and orchitis.
If N. gonorrhoeae is resistant to the penicillin family of antibiotics, then ceftriaxone (a third-generation cephalosporin) is often used. Sexual partners should also be notified and treated.