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BACKGROUND: The purpose of the present study was to determine pathogens and behaviors associated with nongonococcal urethritis (NGU) and the usefulness of the urethral smear in predicting the presence of pathogens. METHODS: We conducted a case-control study of men with and without symptoms of NGU. Sexual practices were measured by questionnaire. First-stream urine was tested for Chlamydia trachomatis, Mycoplasma genitalium, Ureaplasma parvum, U. urealyticum, herpes simplex virus (HSV)-1, HSV-2, adenoviruses, and Gardnerella vaginalis by polymerase chain reaction. RESULTS: C. trachomatis (20%), M. genitalium (9%), adenoviruses (4%), and HSV-1 (2%) were more common in cases with NGU (n = 329) after age and sexual risk were adjusted for (P or =5 PMNLs/HPF is not sufficiently sensitive to exclude pathogens in men with urethral symptoms.
Bradshaw et al. (Tue,) studied this question.
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