Helene Gayle is an AIDS expert who has been working in many different initiatives in the US, among them the Centers for Disease Control (CDC). She also works in President Obama's advisory group on HIV/AIDS. Here she talks about understanding and changing behaviors.

Students are interviewed on the street in Washington DC, about HIV/AIDS and prevention.

Anthony Fauci is interviewed about the progression from HIV to AIDS. He talks about HIV long-term survivors and different aspects of non-progression to AIDS. He also reflects on the future for antiretroviral drugs and HIV vaccines.