Where is the HIV/Aids Vaccine?

 As COVID-19 vaccines are rolling out.

It has been 37 years since HIV was discovered as the cause of AIDS, and there is no vaccine. Yet we have one for COVID in only a few months, so what's the story?

Associate Dean for Global Health in the School of Medicine, Director of the UAB Center for AIDS Research and a Professor of Medicine in the Division of Infectious Diseases  Dr. Michael Saag joins us for the conversation.