Working together with the HIV+ community, the team is making maps of where people go for care and how the places they live impact their health and their lives. The aims of the study are: (1) To examine spatial relationships between neighborhood characteristics and HIV treatment outcomes in San Francisco through the use of geographic information systems (GIS) software; (2) To identify locations of resources which facilitate engagement in HIV treatment by utilizing methods of public participatory GIS (PPGIS) with HIV positive individuals; and (3) To create an online mapping platform for the dissemination of thematic maps showing gaps in HIV treatment outcomes and resources using data collected in Aims 1 and 2. The scope of work for RTI's contribution consisted of Dr. Alex Kral providing scientific oversight and assisting with papers for publication in peer-reviewed journals.