Risk factors for trichomoniasis:
(1) attendance at a sexually transmitted disease (STD) clinic
(2) presence of a sexually transmitted disease (gonorrhea, syphilis, chlamydia, HIV)
(3) recent unprotected sexual contact with a woman with trichomoniasis
(4) presence of urethritis (defined as symptoms, discharge and/or a smear with >= 5 PMNs per oil immersion field)
Factors reducing the risk of trichomonasis:
(1) wearing a condom during sexual intercourse
(2) being treated at the same time as female sexual partner with trichomoniasis
A male may still have Trichomonas vaginalis after antibiotic therapy, either due to antibiotic resistance or reinfection.
Schwebke and Hook found that at an STD clinic:
(1) 10% of men without urethritis had trichomoniasis
(2) 20% of men with urethritis had trichomoniasis
(3) Many men with trichomoniasis had one or more other STDs.
