CD4 and AIDS: The Mma Bana trial was conducted in Botswana between 2006 and 2008: PPHIV with a CD4+ T cell count of >200 cells/mm3 and no AIDS-defining illness were randomized to receive either nucleoside reverse transcriptase inhibitor (NRTI)-based ART or protease inhibitor (PI)-based ART during the postpartum period.