BUBONIC PESTE Pandemic that ravaged Europe and part of Asia in the 14th century. It is native to Mongolia and transmitted by the bite of fleas living in rodents. It killed more than 100 thousand people, including more than a third of Europe's population. It is mainly called bubonic because bubbly, tumors or inflammations occur on the surface of the skin. He usually kills in 10 days. With treatment, 10% of those infected die.