Acceptability and willingness to pay for a hypothetical HIV vaccine in Brazil and the implications: a cross-sectional study.

Introduction: The Human Immunodeficiency Virus (HIV) is one of the greatest public health challenges still facing communities worldwide, and until this moment, no vaccine is available for its prevention. In Brazil, the Rio de Janeiro State has stood out regarding the prevalence of this disease. As a result, an important state to consider the Willingness to Pay (WTP) for a hypothetical HIV vaccine to help with future pricing.