Vusa Nyathi

The child squirms drowsily as it struggles to roll over on the bunk bed, eventually succumbing to sleep. The skin on its face is too taught. Wisps of hair look as if they could fall out at any minute. "He is just from his daily ARVs [anti-retroviral drugs]," says the woman who takes care of him at an orphanage in the eastern Zimbabwean city of Mutare.