This book offers an original perspective on AIDS as a development issue in South Asia, a region with a heterogeneous epidemic and estimated national HIV prevalence rates of up to 0.5 percent. The analysis challenges the common perception of HIV and AIDS which has been shaped to a large extent by analysis of HIV and AIDS in other regions with much higher prevalence rates. Three risks to development are associated with HIV and AIDS in South Asia: the risk of escalation of concentrated epidemics, the economic welfare costs, and the fiscal costs of scaling up treatment.