Rev Soc Bras Med Trop
February 2022
Introduction: HIV incidence estimates are essential to monitor the progress of prevention and control interventions.
Methods: Data collected by Brazilian surveillance systems were used to derive HIV incidence estimates by age group (15-24; 25+) and sex from 1986 to 2018. This study used a back-calculation method based on the first CD4 count among treatment-naïve cases.