Pictures of Bubonic Plague

What it looks like and how it's spread

During the Middle Ages, bubonic plague, known as the "Black Death," killed thousands of people. Bubonic plague is a potentially fatal bacterial infection called "Yersina pestis." You may be surprised to learn that the disease still exists in some parts of the world. These photos show what infection with bubonic plague looks like, and also some of the ways it is transmitted from animals to humans.