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Clin Infect Dis. 2001 Apr 1;32(7):995-1003. Epub 2001 Mar 15.

Role of Mycoplasma genitalium and Ureaplasma urealyticum in acute and chronic nongonococcal urethritis.

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Genitourinary Medicine Section, Department of Medicine, Imperial College of Medicine, St. Mary's Hospital, Paddington, London, United Kingdom.


One hundred fourteen heterosexual men with acute nongonococcal urethritis (NGU) and 64 patients without NGU were studied. We determined that Chlamydia trachomatis and Mycoplasma genitalium were strongly associated with acute NGU after controlling, by means of multivariate analysis, for age, race, sexual lifestyle, and coinfection (odds ratio [OR], 13.0, 95% confidence interval [CI], 2.6-64.5; and OR, 17.9, 95% CI, 2.0-160, respectively). Eighty-six men with acute NGU reattended at least once 10-92 days after treatment; 59 (69%) of these 86 men had urethritis. Seven men had M. genitalium detected during 10-92 days of follow-up, and all had urethritis. Ureaplasmas were not associated with acute NGU in multivariate analysis, but their detection was associated with the presence of urethritis during follow-up (P=.014). Ureaplasmas or M. genitalium were associated with both chronic NGU, which was defined as urethritis that occurred 30-92 days after the commencement of treatment (P=.028), and chronic NGU with symptoms or signs (P=.005).

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