Earlier this spring, I had a chance to talk to Mark Dybul, the head of the Global Fund to Fight AIDS, TB, and Malaria and former administrator of PEPFAR, the U.S. bilateral AIDS program. At the time, he expressed optimism about using geo-referenced data on HIV/AIDS prevalence to better to target AIDS foreign assistance. In advance of the recent AIDS conference in Australia, researchers (which include Dybul) released a new study in The...


