Leaders from the worlds of science, diplomacy, politics, philanthropy and entertainment are speaking at AIDS 2012 , including President Bill Clinton , US Secretary of State Hillary Clinton , US Secretary of Health and Human Services Kathleen Sebelius and South African Deputy President Kgalema Motlanthe will participate, as will former First Lady Laura Bush . The week-long conference will be held this year at the DC Convention Center to discuss policy, prevention and advocacy for those living with the disease. "I am delighted that the District of Columbia has been chosen to host this conference", said DC Mayor Vincent Gray. It has been more than 20 years since a conference has been hosted in our area. Since 2000, HIV infection rates in the United States have remained stable at approximately 50,000 new infections each year. While this is a significant decrease, the number is still high. HIV/AIDS cases in the Nation's Capital still remains at an all-time...