What happened to make plague able to cause devastating epidemics, as in this depiction from 1349?
Pierart dou Tielt/Wikimedia
People caught and died from plague long before it caused major epidemics like the Black Death in the middle ages. Could what scientists call cultural resistance be what kept the disease under control?
Yersinia pestis bacteria start to target the lungs and become so deadly?
National Institute of Allergy and Infectious Diseases
It's a deadly bacterium that can spread like wildfire. New research suggests Yersinia pestis first developed its ability to cause lung infection and then evolved to be highly infectious.
A model of the bubonic plague bacterium, which is known as Yersina pestis.
Cases of plague have been reported in the Chinese city of Yumen, where a man has died of the disease. Control measures taken by the authorities include travel restrictions in and out of the city, and 151…