Design Strategy of the Sabes Study: Diagnosis and Treatment of Early HIV Infection Among Men Who Have Sex With Men and Transgender Women in Lima, Peru, 2013-2017.

The Sabes study evaluates a treatment-as-prevention intervention in cis-gender men who have sex with men and transgender women in Lima, Peru, populations disproportionately affected by the HIV epidemic. The intervention is designed to prevent onward transmission of HIV by identifying HIV-negative, high-risk individuals, testing them monthly for the presence of HIV, and then rapidly treating those who become HIV positive. The main outcome of interest is the development of a model predicting the population-level impact of early detection of HIV infection and immediate initiation of antiretroviral therapy (ART) in this population From July 2013 to September 2015, 3,336 subjects were screened for HIV; 2,682 (80.4%) were negative and 2,084 began monthly testing. We identified 248 individuals shortly after HIV acquisition, 215 of whom were enrolled in the treatment phase of our study. All participants were followed for 48 weeks and then were referred to the Peruvian Ministry of Health to continue free HIV care and treatment. This intervention demonstrates that it is possible to recruit high-risk individuals, screen them for HIV, continue to test those who are initially HIV negative in order to identify incident cases shortly after acquisition, and then rapidly link them to care.