[Frequency of sexually transmitted diseases in patients at prenatal check-ups].

The sexually transmitted diseases (STD) in pregnant women can result in pregnancy abnormalities, fetal damage or newborn infection. In this study the frequency of STD between the pregnant women of the Instituto Nacional de Perinatología, in 19 months period, was 7.3 per 100 patients in prenatal care; being vulvovaginal candidiasis, bacterial vaginosis, Ureaplasma urealyticum infection, condyloma acuminatum and Chlamydia trachomatis infection the most commonly diagnosed diseases. The 25% of the patients had two or more sexually transmitted infections simultaneously. There were no gonorrhoea cases. The early detection and treatment of the STD in pregnant women must be a common practice in the prenatal care. Primary prevention will reduce the morbidity not only for the offspring but for the pregnant women as well.