This year's World AIDS Day brought news that both the United Nations and the World Health Organization will step up efforts to combat the global AIDS epidemic. It also served as a reminder that, during the last two decades, over 22 million people have died of the disease and 40 million are now infected with H-I-V, the precursor to the disease. Dr. Jon Hallberg is medical director of the Primary Care Clinic at the University of Minnesota. He says, despite medical advances, three million people around the world still die of AIDS each year.