Systems Biology is a rapidly expanding field and comprises the study of biological systems through mathematical modeling and the analysis of large volumes of biological data. This book presents the theoretical foundations of Systems Biology, as well as its application in studies on human hosts, pathogens and associated diseases. This book presents several chapters written by renowned experts in the field. Some topics discussed in depth in this book include: computational modeling of multidrug-resistant bacteria, systems biology of cancer, systems immunology, cellular reprogramming, bio-modeling using Petri nets, computational modeling of neuronal circuits, reconstruction and analysis of gene regulatory networks.