Plague (Black Death) Causes, Symptoms, Signs, Treatment, History and Diagnosis

Overview Plague is an infectious disease caused by bacteria called Yersinia pestis. These bacteria are found mainly in rodents, particularly rats, and in the fleas that feed on them. Other animals and humans usually contract the bacteria from rodent or flea bites. Historically, plague destroyed entire civilizations. In the 1300s, the "Black Death," as it was called, killed approximately