Prevalence and Risk Factors for Human Immunodeficiency Virus Infection Among Female Sex Workers: Distinct Offers of Sexual Services in a Municipality of the Brazilian Amazon.

This study determined the prevalence of human immunodeficiency virus (HIV) infection and its associated factors in female sex workers (FSWs) from the municipality of Bragança in the state of Pará, Brazil. A cross-sectional study using a respondent-driven sampling method was used to investigate 137 FSWs. They were interviewed using a questionnaire for the collection of data on their characteristics and risk behavior.