Background: As part of an HIV prevention program aimed at female sex workers (FSWs) and their male clients in Benin, we conducted a survey combining laboratory testing and a behavioural questionnaire in 2002 to estimate the prevalence of HIV, Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT) and to determine the social, demographic and behavioral factors associated with these infections. The study provided a follow-up of the epidemiological situation in Cotonou, Benin's largest city, where the intervention began in 1993 with the collection of baseline data; it also collected such data for three other cities in Benin, to which the intervention was being extended in 2002.
Design And Methods: A cross-sectional study was conducted among 723 self-identified FSWs aged at least 15 years: 474 recruited in Cotonou, 128 in Porto-Novo, 42 in Abomey-Bohicon and 79 in Parakou.