Incidence of Sexually Transmitted Infections Among HIV-Positive Sex Workers in KwaZulu-Natal, South Africa

In Brief Background Improved treatment of sexually transmitted infections (STIs) is associated with decreased HIV incidence. However, the success of such programs among HIV-positive sex workers has not been shown. Goal The goal of the study was to determine the incidence of STIs (Trichomonas vaginalis, Neisseria gonorrhoeae, and Chlamydia trachomatis infections) among HIV-positive sex workers. Study Design A cohort of HIV-positive sex workers was treated for all STIs at baseline and observed monthly to detect and treat new infections. Results Seventy-seven HIV-positive sex workers were followed up for a total of 58.1 women-years. The incidence rate per 100 women-years was 150 (CI: 120–180) T vaginalis infections; 66 (CI: 45–87) N gonorrhoea infections; 30 (CI: 14–42) C trachomatis infections; and 244 (CI: 200–280) STIs of any type. Conclusion In this cohort of HIV-positive sex workers the incidence of STIs was high, despite their participation in a prevention program comprising monthly STI treatment, counseling, and condom promotion. A study of HIV-positive sex workers showed a high incidence of Trichomonas vaginalis, Neisseria gonorrhoeae, and Chlamydia trachomatis despite their participation in a prevention program of monthly STI treatment, counseling, and condom promotion.