Black Death plague pathogen thousands of years older than first thought

From ABC News in Science, 23 October 2015: The microbe responsible for the Black Death plagues was infecting Bronze Age humans more than 3,000 years earlier than the pandemics it is most notorious for. Early forms of the bacteria, Yersinia pestis, have been found in Bronze Age human teeth up to 5,000 years old, according Continue reading Black Death plague pathogen thousands of years older than first thought