The prevalence of Candida albicans, Neisseria Gonorrhoeae, and trichomonas vaginalis as some of the most important agents of sexually transmditted disease (STD), were studied in 100 women, belonging to a high risk group (protitues). Also a questionnaire were provided, in order to determine the potential risk of transmission of STD at the time of the survey. The prevalence of the infection by Candida albicans in the genital tract were 7 percent, and 8 percent and 10 percent for Neisseria gonorrhoeae and Trichomonas vaginalis, respectively. In some cases, inappropriate sexual behavior, as well as high number of sexual contacts with different clients, were detected