The eighth edition of "Diseases of Swine" includes much new information. More than 120 authors, many of them new to this edition, contribute to the book's 76 chapters. The new edition offers greater utility to practitioners by providing assistance in diagnostic investigation (with charts on differential diagnoses with the full range of clinical symptoms and presenting signs, including porcine reproductive and respiratory syndromes and other emerging diseases) and assistance in developing herd health strategies. In addition, the chapter on genetics now includes the application of generic markers and DNA mapping. The section on porcine reproductivity and respiratory syndrome offers comprehensive information and is written by both US and European researchers with contributions by highly experienced outbreak and chronic infection veterinary practitioners.