Recently UNAids announced a steep downward revision of the number of HIV-infected people, especially in Asia. If the latest figures are accurate, the epidemic is even more concentrated in Southern Africa than previously thought. According to UNAids, of the 33,2-million people living with HIV worldwide, more than two-thirds of them (22,5-million) live in sub-Saharan Africa. South Africa remains the country with the greatest number of HIV infections.