Etiologies of Nongonococcal Urethritis: Bacteria, Viruses, and the Association with Orogenital Exposure

Abstract

We identified adenoviruses and HSV-1 as significant causes of NGU with distinct clinical and behavioral characteristics and highlighted the association between insertive oral sex and NGU. A urethral PMNL count of > or =5 PMNLs/HPF is not sufficiently sensitive to exclude pathogens in men with urethral symptoms.