Sean Cahill, Ph.D., is Director of Health Policy Research at the Fenway Institute in Boston, where he focuses on LGBT health issues, HIV/AIDS, and elder and youth policy. He is Adjunct Assistant Professor of Public Administration at New York University, and Lecturer in Political Science at Northeastern University, where he teaches courses on LGBT public policy. Cahill serves on the Massachusetts Commission on LGBT Youth. Cahill led policy research at the National Gay and Lesbian Task Force Policy Institute from 1999 to 2007, and led policy research and prevention efforts at Gay Men’s Health Crisis from 2007 to 2011. Working with staff from the House and Senate Foreign Relations Committee in 2007-2008 and Krista Lauer of the Global Forum on Men who have Sex with Men (MSM) and HIV, Cahill helped get language into the 2008 reauthorization of the President’s Emergency Plan for AIDS Relief promoting HIV prevention with gay and bisexual men in Africa and the Caribbean, and epidemiological research on men who have sex with men and HIV. From 2009-2012 Cahill worked with the Global Forum on MSM and HIV Policy Working Group to promote implementation of the MSM prevention and research provisions of President’s Emergency Plan for AIDS Relief. From 2007 through 2010 Cahill worked closely with other U.S. AIDS activists and White House officials to support and inform the development of a domestic National HIV/AIDS Strategy (NHAS). A leading expert on HIV and aging, Cahill helped organize a White House meeting on the subject in 2010. Cahill also managed GMHC’s community-level HIV and substance use prevention work, organizing the annual House of Latex Ball, the largest House/Ball event in the world, for 4 years. Cahill is lead author, with Nathan Schaefer and Robert Valadez, of “Promoting HIV Prevention and Research with Men who have Sex with Men (MSM) through U.S. Foreign Policy,” in Global HIV/AIDS Politics, Policy, and Activism: Persistent Challenges and Emerging Issues. Volume 2: Policy and Policymaking. (Raymond Smith, editor). Praeger, 2013 He is coauthor, with Robert Valadez, of “Growing older with HIV: New public health challenges” (American Journal of Public Health, 2013. Cahill also wrote Pre-exposure prophylaxis for HIV prevention: Moving toward implementation (2012, The Fenway Institute). This monograph examines the state of funding and implementation planning for PrEP in Africa and elsewhere, examining work of the Gates Foundation, Clinton Foundation, World Health Organization, Global Fund to Fight AIDS, Tuberculosis and Malaria, the European Medicines Agency, and the Pangea Global AIDS Foundation. Cahill is author of three academic press books and several dozen other articles and chapters on HIV policy and LGBT policy issues. Cahill served on the HIV Health and Human Services Planning Council of New York City (Ryan White Planning Council) from 2009 to 2011 as a Member and co-chair of its Policy Committee. From 2007-2011 he served on the Planning Council’s Priority Setting and Resource Allocation Committee and on the Policy Committee. Cahill also served on the Global Business Council on HIV/AIDS, Tuberculosis and Malaria, U.S. HIV/AIDS Corporate Strategy Advisory in 2010, and from 2007 to 2011 served on the Steering Committee of the U.S. Substance Abuse and Mental Health Services Agency’s methamphetamine working group. From 2007-2011 he was Assistant Editor of Treatment Issues magazine, which runs every other month in Poz magazine. From 2008 to 2011 Cahill was Editor-in-Chief of AcHIeVe, a quarterly journal on HIV prevention, treatment and politics published by the AIDS Community Research Initiative of America and Gay Men’s Health Crisis. In 2005 and 2006 Cahill served on the International Scientific Committee to plan the International LGBT Rights Conference held in Montreal, Quebec from July 26 to 29, 2006.