Cuban intervention in Angola the requested financial assistance (100,000US$) it received from Yugoslavia. Portugal's sudden retreat from Angola and Mozambique in 1975 ended a history of South African military and intelligence cooperation with Portugal against the Angolan and Namibian independence movements dating back to the 1960s, later formalized in a secret alliance codenamed Alcora Exercise. It also ended economic cooperation with regard to the Cunene hydro-project at the Angolan-Namibian border, which South Africa had financed. South African involvement in Angola, subsumed under what it called the South African Border War, started in 1966 when the conflict with the Namibian independence movement, South West Africa
Health in Angola vaccination against polio and vitamin A supplementation. Angola has a large HIV/AIDS infected population. The Joint United Nations Programme on HIV/AIDS (UNAIDS) estimated adult prevalence at the end of 2003 at 3.9% – over 420,000 infected people. Angola's 27-year civil war (1975–2002), deterred the spread of HIV by making large portions of the country inaccessible. Angola was thus cut off from most contact with neighboring countries that had higher HIV infection rates. With the end of the war, transportation routes and communication are reopening, therefore enabling a greater potential for the spread of HIV/AIDS. Current statistics indicate that the border