will deservedly become a standard text for historians of late 19th- and early 20th-century public health in Britain. The narrative reveals the uneven, yet revolutionary impact of bacteriology on epidemiology and public health practice and sets events in Britain in a transnational context. The book is a must too for social historians, as it offers fascinating and novel insights into domestic life, through what food was brought into the home, how it was prepared and eaten, and how, too often, it had unwanted consequences.