Susan Hariri, PhD¹, Suzanne Powell, MPH¹, Martin Steinau, PhD², Heidi Bauer, MD, MPH, MS³, Nancy Bennett, MD, MS⁴, Karen Bloch, MD, MPH⁵, Sean Schafer, MD⁶, Linda Niccolai, PhD⁷, Elizabeth Unger, MD, PhD² and Lauri Markowitz, MD⁸, 1Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, GA, 2CDC, Atlanta, GA, 3Program Development and Evaluation, California Department of Public Health, STD Control Branch, Richmond, CA, 4Center for Community Health, University of Rochester Medical Center, Rochester, NY, 5Department of Medicine (Infectious Diseases) and Preventive Medicine, Vanderbilt University Medical Center, Nashville, TN, 6Oregon Public Health Division, Portland, OR, 7Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, 8Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA