In this post in USAID's "IMPACTblog," International AIDS Vaccine Initiative (IAVI) President and CEO Margaret McGlynn discusses new modeling data from IAVI and the Futures Institute, with support from USAID, which "illustrates how a safe, preventive HIV vaccine that is accessible and affordable can help us end the AIDS pandemic." The information, released in recognition of World AIDS Vaccine Day, also known as HIV Vaccine Awareness Day, "is available in a series of publications and an interactive web tool," according to McGlynn. She writes, "The world must continue to scale up and improve the response to HIV by using powerful prevention tools that are currently at our disposal. ... Our new models show that a vaccine can build on these existing tools and take us down the last mile to the end of the AIDS pandemic" (5/18).