Charles Fann, n/a1, Sally C. Stephens, MPH2, Susan S. Philip, MD, MPH3, Stephanie Cohen, MD, MPH3 and Kyle Bernstein, PhD, ScM4, 1Disease Prevention and Control Section, Population Health Division, San Francisco Department of Public Health, San Francisco, CA, 2Applied Research, Community Health Epidemiology, and Surveillance, San Francisco Department of Public Health, San Francisco, CA, 3San Francisco City Clinic, Disease Prevention and Control, Population Health Division, San Francisco Department of Public Health, San Francisco, CA, 4STD Prevention and Control Section, San Francisco Department of Public Health, San Francisco, CA