Featuring over 30 new chapters that incorporate state-of-the-art molecular, genetic and medical concepts, this edition discusses each virus in sections, focusing on basic and general aspects, including pathology and pathogenesis, latency, epidemiology, host immune response, clinical manifestations, diagnosis, and prevention and control. The book is illustrated throughout with diagrams, tables and photomicrographs, as well as colour plates dealing primarily with the principles of virus structure.