Disease that wiped out over a third of medieval Europe is back — in Colorado
The plague ravaged Medieval Europe, killing 30 to 50 percent of the population. Estimation 200 million. The bacterium that causes it, Yersinia pestis, lives in rodents and is transmitted to humans through the bite of infected fleas. It spreads between humans through unprotected contact with bodily fluids of an infected person or by inhaling respiratory […]