This highly anticipated update of the acclaimed textbook draws on the latest research to give students the knowledge and tools to explore the mechanisms by which bacterial pathogens cause infections in humans and animals. Written in an approachable and engaging style, the book uses illustrative examples and thought-provoking exercises to inspire students with the potential excitement and fun of scientific discovery. Completely revised and updated, and for the first time in stunning full-color, Bacterial Pathogenesis: A Molecular Approach, Fourth Edition, builds on the core principles and foundations of its predecessors while expanding into new concepts, key findings, and cutting-edge research, including new developments in the areas of the microbiome and CRISPR as well as the growing challenges of antimicrobial resistance.