Bernard M Branson1, Christine C Ginocchio2. 1. Associate Director for Laboratory Diagnostics, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, United States. Electronic address: BBranson@cdc.gov. 2. North Shore-LIJ Laboratories, Lake Success, NY, United States; Hofstra-North Shore School of Medicine, Hempstead, NY, United States.