Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Bubonic plague is a zoonotic disease which primarily circulates among small rodents and their fleas, and is one of three types of bacterial infections caused by Yersinia pestis. Symptoms of the bubonic plague in humans include fever, chills, headaches, vomiting, diarrhea and swollen lymph nodes in the groin, armpit or neck areas. Without treatment, bubonic plague kills about two thirds of infected humans within 4 days...