Hans Rosling gives a stimulating and thought provoking talk on the way the world views economic data at a TED conference. He singles out Africa in particular (around the 15:00 mark) and shows how trying to apply a blanket approach for HIV care for all of Africa won’t work. You have to take things on a case-by-case basis.
“We tend discuss on what solutions there should be in Africa. Everything in this world exists in Africa. You can’t discuss universal access to HIV for the richest quintile in South Africa with the same strategy as the poorest quintile in Niger. The improvement of the world must be highly contextualized.”