“…Infections are disorders in which damage or dysfunction of an organ is produced by microorganisms, generally in association with inflammation (Merlin et al, 1994). O n the other hand, several authors do not see a significant role for Ureaplasma urea&ticum, Chlamydia trachomatis and other microorganisms in asymptomatic male infertility patients (Meares, 1980;Styler & Shapiro, 1985;Hellstrom et al, 1987;Hillier et al, 1990;Eggert-Kruse et al, 1992b;Shortliffe et al, 1992;Farid & Hargreave, 1994). Both can induce urethritis (Bowie, 1984) and prostatitis (Brunner et al, 1983;Bruce & Reid, 1989;Hofstetter & Schmiedt, 1970).…”