1,109 patients suffering from non-gonococcal urogenital infections have been studied. 63.4% of the patients had genital discharge. Microorganisms were found in 685 patients (61.8%), only one agent being isolated in 73.6% and two in 22.1% of the cases respectively. The rest of the patients had an association of three or more microorganisms. In women, the most frequently identified microorganism was Candida sp (29.9%), followed by U. urealyticum (20.5%) and G. vaginalis (19.7%). In men, U. realyticum (40.1%) was the most frequent followed by C. Trachomatis (21.4%) and M. hominis (16.6%).