This book investigates the historical trajectory, biological mechanisms, and devastating impact of African trypanosomiasis, commonly known as sleeping sickness. Peter Kennedy provides a comprehensive examination of the disease, tracing its presence across the African continent and the scientific efforts to identify its vector and pathogen. By synthesizing historical accounts with medical data, the author argues that the disease has been a significant, yet often overlooked, factor in the socio-political and economic development of the regions it affects.

Experts and readers frequently cite this work as a valuable historical resource for understanding the intersection of tropical medicine and colonial history. The text is noted for its accessible yet thorough approach to a complex epidemiological subject.