Author(s): Bill Rosen

Medieval

In the middle of the sixth century, the world's smallest organism collided with the world's mightiest empire. Twenty-five million corpses later, the Roman Empire, under her last great emperor, Justinian, was decimated. Before Yersinia pestis, the bacterium that carries bubonic plague, was through, both the Roman and Persian empires were easy pickings for the armies of Muhammad on their conquering march out of Arabia. In its wake, the plague - history's first pandemic - marked the transition from the age of Mediterranean empires to the age of European nation-states - from antiquity to the medieval world. "Justinian's Flea" is the story of that collision, a narrative history that weaves together evolutionary microbiology, architecture, military history, geography, rat and flea ecology, jurisprudence, theology, epidemiology, and the economics of the silk trade.