In this Tuesday Sept. 5, 2006 file photo, South African Health Minister Dr. Manto Tshabalala-Msimang stands outside Parliament in Cape Town , South Africa . (AP Photo/Mark Wessels - file)

US Assistant Secretary for African Affairs Johnnie Carson, talks to the media on October 2009 in Nairobi . Carson said Friday it is urging the Ugandan leadership to block a bill calling for draconian measures against homosexuals, warning it would be a setback in fighting AIDS. Photo:Simon Maina/AFP

UN Secretary-General Ban Ki-moon is seen visiting a booth of the UNITAID, an international drug purchase facility, during a meeting of UN Economic and Social Council, in July, at UN Offices in Geneva . UNITAID has decided to create a "patent pool" to help facilitate the production of generic AIDS medications for low- and middle-income countries. (AFP/File/Fabrice Coffrini)