South African lab technician Nozipho Mlotshwa was waiting for the test results for a potential HIV vaccine, which has eluded scientists for decades, when the order came from USAID to stop work. The first round of vaccines she and her colleagues made in Johannesburg had produced an immune response in rabbits,

Milicent Muyoma has been turned away twice from the clinic where she collects her HIV medication in Mathare, an informal settlement in Nairobi, Kenya.

At a rural village in South Africa's KwaZulu-Natal province, unemployed 19-year-old Nozuko Majola is trying to figure out if she has enough money for the one-hour ride to collect her much-needed HIV medication,