Multiple species of the genera Mycoplasma and Ureaplasma can infect the human genitourinary tract. These include M. hominis, U. urealyticum. Associated clinical diseases include pelvic inflammatory disease, cervicitis, urethritis, epididymitis, pyelonephritis, chorioamnionitis, post-partum fever, still birth, and rarely meningitis, brain abscess, endocarditis, wound infections, and bacteremia. Ureaplasma and M. hominis have been associated with bacteremia, pneumonia and meningoencephalitis in neonates. Genital Mycoplasma or Ureaplasma infection may be asymptomatic in many cases. Urethritis may present with urethral discharge in men, vaginal discharge in women or urethral irritation or dysuria in either men or women.