Bubonic Plague Pictures: Setting Rat Traps
Photos of Bubonic Plague Infections and Transmission
From Mary Kugler, R.N., former About.com Guide
Updated February 13, 2009
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
Millions of people in Europe died from bubonic plague in the Middle Ages, when homes and places of work were inhabited by flea-infested rats. The fleas carried the Yersinia pestis bacterium that causes bubonic plague.