Book excerpt: This is an absorbing account of the continuing battle to control hospital infections, from the earliest days of hospital care when bad air or miasma was thought to be the cause, to the present day and the emergence of antibiotic-resistant 'superbugs' such as MRSA and necrotizing fasciitis. It succeeds on many levels: as a fascinating social history of hospital care from mediaeval times, when patients endured verminous conditions, to the present day; as a survey of the rise, fall and emergence of new nosocomial infections; and as a chronological account of the emergence of medical microbiology and infection control. The pivotal roles of key personalities such as Joseph Lister, Florence Nightingale, Louis Pasteur and Robert Koch are highlighted, and the history of this subject illuminates not only why hospitals and infections have had such an intimate and long relationship but one that seems destined to continue well into the future.