RIATT ESA October 2, 2017 HelpAge Older caregivers and older persons living with HIV/AIDS need support. RIATT ESA October 2, 2017 HelpAge Sub-Saharan Africa has been hit the hardest by the HIV/AIDS epidemic. According to The Joint United Nations Programme on HIV/AIDS (UNAIDS), in 2015 there were 36.7 million people living with HIV globally, 70% of who live in sub Saharan Africa.