Injecting Drug Use Among Mexican Female Sex Workers on the US-Mexico Border.

Both injecting drug users (IDU) and sex workers are at great risk of contracting and transmitting HIV. Therefore, IDU sex workers could be at especially high risk. The recent increase of HIV infection in Mexico has caused increased attention to sex work. We identify the correlates of injecting drug use including socio-demographic, work history, and sexual and non-injecting drug use risk behaviors among Mexican female sex workers. There is a high risk profile for IDUs compared to never injectors including a high prevalence of lifetime STI infection (54.2%). Revealed is an environment composed of high-risk networks that may have serious binational public health implications.