How close are we to an HIV vaccine?

After the COVID vaccine rolled out less than a year after the pandemic was first announced, we wondered about progress on a similar front: how close are we to creating an HIV vaccine? What do scientists know about HIV? And what did COVID teach us about immunization? Dr. Amelia Escolano is an assistant professor at the Wistar Institute in Philadelphia. She talks about the intricacies of the HIV virus and what goes into developing an HIV vaccine.