Bubonic plague

that is caused by bacteria called Yersinia pestis that live in some animals - mainly rodents - and their fleas.

Bubonic plague is the most common form of the disease that people can get. The name comes from the symptoms it causes - painful, swollen lymph nodes or 'buboes' in the groin or armpit.

From 2010 to 2015 there were 3,248 cases reported wor

ldwide, including 584 deaths.

Historically, it has also been called the Black Death, in reference to the gangrenous blackening and death of body parts, such as the fingers and toes, that can happen with the illness.