During his postdoctoral training at Emory, his research focused on the development of therapeutic strategies to enhance immune response during chronic SIV/HIV infection. He demonstrated PD-1 blockade results in enhancement of both cellular and humoral immune responses that lead to decreased viral levels and enhanced survival of a SIV infection. His current research focus is to understand the basic biology of anti-viral T and B cell interactions for generating effective cellular and humoral immune response after vaccination and following HIV/SIV infection.