The most recent figures from UNAids show a continent divided in two. In north Africa, up to 0.5% of the population has been infected with HIV. In sub-Saharan Africa, that figure is 8.8% but rising to almost 40% in some countries. In four countries - Botswana, Lesotho, Swaziland and Zimbabwe - at least one in three of the population is HIV positive.
AIDS spreads in Africa.