Objective: The aim of the current study was to assess the incidence of U. urealyticum
and Mycoplasma hominis in men with nongonococcal urethritis in Tabriz.
Materials and Methods: Two hundred men with confirmed urethritis and 50 healthy
men of similar age as control group were investigated for Ureaplasma urealyticum at
the medical microbiology laboratory of Sina and Emam hospitals of Tabriz University
between 1st October 2003 and 30th April 2004.
Results: Fifty six (28%) of the 200 patients had gonococcal urethritis whilst 144
(72%) had non-gonococcal urethritis. Twenty nine (20.14%) of specimens showed
urea positive organisms in broth cultures which in incubation on solid medium, 27
(18.75%) of them were identified as U. urealyticum. Mycoplasma hominis was
detected in only five cases (3.47%). In wet preparation three (2.08%) Trichomonas
vaginalis were observed. The difference in the occurrence of U. urealyticum between
the patients and the control group was highly statistically significant (p
Key words: Ureaplasma urealyticum, non- gonococcal urethritis, Mycoplasma