Dr. McGinn studies how bacterial pathogens sense and manipulate their human hosts. Dr. McGinn is focusing on the tick-borne bacterial pathogen Rickettsia parkeri, which can only survive within eukaryotic host cells. By uncovering novel interactions between host and pathogen, his work may reveal new insights into how human cells work and what goes awry in disease states. He is also developing tools to manipulate key virulence pathways in Rickettsia parkeri that can be used to transform the bacteria into a vehicle for delivering antigens or new drugs directly to cancer cells.