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. 2004 Mar;31(3):192-5.
doi: 10.1097/01.olq.0000114653.26951.71.

Association of Ureaplasma urealyticum (biovar 2) with nongonococcal urethritis

Takashi Deguchi  1 , Takashi Yoshida, Takamaro Miyazawa, Mitsuru Yasuda, Masayoshi Tamaki, Hiroaki Ishiko, Shin-Ichi Maeda
Affiliations

Association of Ureaplasma urealyticum (biovar 2) with nongonococcal urethritis

Takashi Deguchi et al. Sex Transm Dis. 2004 Mar.

Abstract

Background: The tiny (T)-strain mycoplasmas, designated in 1974 as Ureaplasma urealyticum, have been divided into 2 species, Ureaplasma parvum (biovar 1) and U. urealyticum (biovar 2), but association of each of these species with nongonococcal urethritis (NGU) remains unclear.

Goal: The goal of this study was to determine whether U. parvum (biovar 1) or U. urealyticum (biovar 2) is associated with NGU.

Study design: The prevalences of U. parvum (biovar 1) and U. urealyticum (biovar 2) in 572 patients with urethritis were compared with those in 141 men without urethritis.

Results: The prevalence of U. urealyticum (biovar 2) in men with NGU (15.8%) or with nonchlamydial NGU (18.0%) was significantly higher than that in men without urethritis (7.8%). The prevalence of U. parvum (biovar 1) in men with NGU (8.5%) or with nonchlamydial NGU (11.1%) did not differ significantly from that in men without urethritis (13.5%).

Conclusion: Our results showed a significant association between U. urealyticum (biovar 2) and NGU. They also suggest that the presence of U. parvum (biovar 1) in the male urethra might be the result of colonization.

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