"Sub-Saharan Africa has been more severely affected by AIDS than any other part of the world. In 2005, the United Nations reports, there were about 25.8 million HIV-positive adults and children in the region, which has about 11.15% of the world's population but over 64% of the worldwide total of infected people. The overall rate of infection among adults in sub-Saharan Africa is 7.4%, compared with 1.1% worldwide. Nine southern Africa countries have infection rates above 10%, and the ten African countries with the largest infected populations account for over 50% of infected adults worldwide. By late 2005, an estimated 27.7 million Africans will have died of AIDS, including a 2005 estimate of 3.1 million deaths. AIDS has surpassed malaria as the leading cause of death in Africa, and it kills many times more Africans than war. In Africa, 57% of those infected are women. Experts attribute the severity of Africa's AIDS epidemic to the region's poverty, women's relative lack of empowerment, high rates of male worker migration, and other factors. Health systems are ill-equipped for prevention, diagnosis, and treatment."
CRS Issue Brief for Congress, IB10050
U.S. Department of State: http://www.state.gov/