Infection was spread to man through bites from rat fleas, causing deadly bubonic plague and a highly contagious strain of pneumonia. Mr Simpson said the bacterium responsible - Yersinia pestis - which ...

The Black Death was one of the most infamous pandemic events in history. It spread across Asia and Europe, decimating a third of the continent’s population during the Middle Ages. The cause was plague ...

For many people, bubonic plague is an illness that seems squarely situated in medieval times. But each year, a handful of human cases pop up in the western United States. Plague can be treated ...