From the Summary: "Sub-Saharan Africa ('Africa' hereafter) 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 11.3% of the world's population but over 64% of the worldwide total of infected persons. The overall adult rate of infection in Africa is 7.2%, compared with 1.1% worldwide. Nine southern Africa countries have infection rates above 10%. Ten African countries with the largest infected populations account for over 50% of infected adults worldwide. By the end of 2005, an estimated 27.5 million Africans had died of AIDS since 1982, including 2.4 million in 2005. 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."
CRS Issue Brief for Congress, IB10050