the need for coordinated health sector action on hiv. Evidence and experience to date provide a compelling rationale for a new global health sector strategy on HIV. The WHO strategy is designed to meet the complex challenges of a dynamic epidemic in a rapidly evolving stage of global health actors. WHO’s work on HIV has been guided by a series of broad-based strategies and initiatives, including the Global health-sector strategy on HIV/AIDS 2003–2007, the “3 by 5” initiative, and the WHO 2006-2010 plan for universal access. The evaluation of and experience from this work highlight the value of a strong.