The Center for Global Health Policy’s “Science Speaks” blog reports on a congressional briefing titled “The Role of HIV Research in Ending AIDS: New Developments in HIV Vaccine and Prevention Science,” which took place in Washington, D.C., on Monday. Examining the question of how to measure progress in the development of an AIDS vaccine, the blog quotes several briefing participants and notes the event “was a collaborative effort from amfAR, the Foundation for AIDS Research, AVAC, Global Advocacy for HIV Prevention, IAVI, and the IDSA Center for Global Health Policy, which produces this blog” (Barton, 11/21).