This report presents the latest developments in the global HIV/AIDS epidemic. With maps and regional summaries, this report provides the most recent estimates of the epidemic’s scope and human toll, explores new trends in the epidemic’s evolution, and features a special section examining the links between HIV/AIDS and humanitarian crises. The estimates are based on the most recent available data on the spread of HIV in countries around the world. The report discusses the state of the epidemic in Asia and the Pacific, Eastern Europe and Central Asia, Sub-Saharan Africa, Latin America and the Caribbean, the Middle East and North Africa, and high-income countries. Best projections suggest that an additional 45 million people will become infected with HIV in 126 low- and middle-income countries between 2002 and 2010, unless the world succeeds in mounting a drastically expanded, global prevention effort.