Sexual Acquisition of Urinary Tract Infection in a Man

RECENT sexual intercourse has been established as an important risk factor for acute cystitis in women.1-3Intercourse probably predisposes women to infection by facilitating entry of urethralEscherichia coliinto the normally sterile bladder, not by actual venereal transmission of bacteria.2,3The role of sexual intercourse as a predisposing factor for urinary tract infections (UTIs) in men has not been studied, to our knowledge, but is generally believed to be unimportant. We describe a 54-year-old man who experienced acute cystitis that was temporally related to recent sexual intercourse and was caused by anE colistrain with the same antibiotic susceptibility pattern and serotype that had just previously infected his wife. Report of a Case A 59-year-old woman had Raynaud's disease but an otherwise noncontributory medical history. In August 1977, she experienced symptoms of a lower UTI for the first time in her life. A clean-catch, midstream urine