In Cameroon, HIV is disproportionately high among female sex workers (FSW) and
men who have sex with men (MSM) compared to the overall adult population (national
prevalence 4.3% in 2011)1. In 2016 an Integrated Biological and Behavioral Survey (IBBS) was conducted among these two key populations. The aim of the IBBS was to assess the knowledge, attitude, risk behavior, and prevalence of HIV and syphilis infections among FSW and MSM in Cameroon, in order to inform programmatic interventions and policies to reduce disease prevalence and incidence in these populations.