XIX International AIDS Conference. Gretchen Neigh is a neurologist at Emory University in Atlanta working with basic research on depression. She tells about her current work on depression in HIV positive rats and her future hopes for research in humans.

XVII International AIDS Conference in Mexico City. Ending of a panel session on the vaccine trials of the International AIDS Vaccine Initiative (IAVI). Seth Berkley, Alan Bernstein and Omu Anzala respond to questions from the audience.