08 Dec 2015

8. Bubonic Plaque

Approximately 150,000,000 people were killed worldwide by Bubonic Plague from 1300s to 1950s. This disease is caused by the bacterium Yersinia pestis. This dreaded disease kills about half of infected patients in 3–7 days without treatment, and is believed by many to be the Black Death that swept through Europe in the 1340s and killing millions.