“…Racial disparities in chlamydia and other sexually transmitted infections (STIs) have been well documented, and are attributed to a wide range of sociodemographic, environmental, behavioral and social factors. 28–30 However, pronounced racial disparities have persisted even after controlling for risk behaviors and other individual level factors. 28,29 In a recent study of the Longitudinal Survey of Adolescent Health, race remained significantly associated with chlamydia independent of sociodemographic characteristics, access to health care, and risky sexual behavior (OR=5.2, 95% CI=3.8–7.2 for non-Hispanic blacks) 29 In addition, the structure of local sexual networks like partner concurrency and assortative mixing by race disproportionately affects populations with high underlying prevalence of STIs from which sexual partners are selected.…”