Sheep helped spread an early form of the plague, suggests new research. The bacterium that causes bubonic plague has been ...

Archaeological sheep bones unveiled at a Bronze Age site in the Eurasian steppe. Ancient animal bones are the key to understanding the origins of zoonotic infectious diseases.

Four thousand years ago, a sheep in the Eurasian Steppe carried a lethal bacterium that once swept across continents. The ...

Scientists have found Yersinia pestis, the notorious plague-causing bacterium, in the remains of a Bronze Age domestic sheep.

Researchers excavated a 4,000-year-old sheep tooth from Russia and found that it was infected by the Late Neolithic Bronze ...