[Frequency of isolation of Ureaplasma urealyticum in an open population from southern Mexico City].

Vaginal cultures for Ureaplasma urealyticum and confidential questionnaires were obtained from women with signs and symptoms of vaginitis who consulted a physician at a Primary Health Center, Tlalpan, D.F., México. In all 220 women were studied, 50 (22.7%) of whom were colonized with Ureaplasma urealyticum, statistical analysis (X2) showed there was no association between colonization with Ureaplasma urealyticum, and age, pregnancy, and other but there was association between colonization with Ureaplasma urealyticum and the number of pregnancies and no birth control method use.