Background: Porcine deltacoronavirus (PDCoV) is an emerging enteric coronavirus that causes severe diarrhea and high mortality in neonatal piglets. The molecular mechanisms underlying PDCoV pathogenesis in the host intestine remain poorly understood. Objective: To characterize the host transcriptional, proteomic, and metabolomic responses to PDCoV infection in the primary target organ (jejunum) using a neonatal piglet model.