social changes influenced the prevalence of diseases. At the start of the work, the author outlines the challenges he faced while compiling the systematic history of epidemics, particularly highlighting the shift from the relatively uniform plague outbreaks to a more diverse array of fevers and diseases in the post-plague era. Creighton emphasizes the importance of understanding the social and economic factors that contributed to the frequency and severity of these epidemics. He introduces various chapters that will detail specific diseases such as typhus, dysentery, and influenza, and their impact on different populations, especially the working classes. The beginning sets a scholarly tone as Creighton seeks to balance medical history with broader social contexts, paving the way for a comprehensive analysis of public health in Britain. (This is an automatically generated summary.)