Debapriyo studies parasite communities and its influence on mammalian hosts, particularly, in human modified landscapes. He combines knowledge of population and community ecology with that of parasitology to understand how host and parasite communities may influence each other’s composition and internal dynamics. These interactions, in addition, are prone to changes due to anthropogenic disturbances. Human-driven habitat fragmentation, modification, global connectivity and climate change are expected to considerably modify such interactions, not only locally but, perhaps, at the global level, with serious repercussions to wildlife conservation and, in turn, public health. His overarching interest, thus, is driven by understanding how increasing human interventions may change the dynamics of interactions between hosts and parasites and consequently, perhaps, facilitate the emergence or re-emergence of infectious diseases.