![](https://www.theblaze.com/media-library/disease-that-wiped-out-over-a-third-of-medieval-europe-is-back-in-colorado.jpg?id=52667579&width=1200&height=600&coordinates=0%2C876%2C0%2C556)
Disease that wiped out over a third of medieval Europe is back — in Colorado
The plague swept through medieval Europe, killing between 30% to 50% of the population — up to an estimated 200 million people. While the bacterium responsible, Yersinia pestis, is found in rodents, it can be transmitted to humans through the bite of …