Evidence generation to strategize India's response to HIV: Journey so far and challenges ahead

India's fight with HIV epidemic is more than three decades old and has come a long way in its response to prevent HIV and mitigate its impact on people living with HIV. Besides political will and able leadership, evidence-based planning and rational resource allocation have been key factors for the success of India's response. First BSS was undertaken in the state of Tamil Nadu by the AIDS Prevention And Control Project (APAC) supported by the United States Agency for International Development. Diverse Activities Need Institutional Support Utilization of the large body of data emanating from the multiple sources mentioned above to inform policy and program requires novel approaches to analyze them. Besides district categorization described above, data triangulation was undertaken to describe and understand the dynamics of district-level epidemics. [...]the country is continuing to primarily rely on prevalence as an epidemiological indicator.