caused by Yersinia pestis which used to be known as Pasteurella. Yersinia pestis is a

bacteria that is transmitted by fleas that have feed on the blood of infected humans and

rodents. The plague bacteria, when ingested, multiply in the fleas digestive tract. It

multiplies until it eventually obstructs the digestive tract. Then

Some topics in this essay:
Pasteurella Yersinia, Bubonic Plague, bubonic plague, yersinia pestis, digestive tract, lymph nodes, throughout body,