According to data in the UNAIDS 2008 Report on the global AIDS epidemic there have been significant gains in preventing new HIV infections in a number of heavily affected countries. In Rwanda and Zimbabwe, changes in sexual behaviour have been followed by declines in the number of new HIV infections.
2008 Report on the global AIDS epidemic (zip 9.2 mb)
Annex l: HIV and AIDS estimates and data, 2007 and 2001 (Excel, 160 kb)
Annex ll: Country Progress Indicators (Excel, 545 kb)