Introduction
STIS, SEXUALLY TRANSMITTED INFECTIONS
Sexually transmitted infections (STI) continue to be a global health concern. Most STIs are asymptomatic, often undetected and are therefore left untreated [Multiple behavioral and social factors increase STI risk among young women including inconsistent or lack of condom use, multiple sexual partners [The aim of the study was to investigate the prevalence and incidence of STIs among South African women and to compare incidence between contraceptive arms, age groups, study sites, and according to condom use and semen detection.