2230 patients from Bucharest with genital infections were investigated (1988-1996) to identify the chlamydial etiology. The rate of isolation of Chlamydia trachomatis was of 33.8%. The highest percentages were reported in patients clinically diagnosed with cervicitis (56.2%) and non-gonococcal urethritis (36%); as well as in patients aged 31-35 years, single, who had genital urinary infections in history.