Eric Walker added Bubonic plague and First evidence that medieval plague victims were buried individually with 'considerable care' | EurekAlert! Science News to Yersinia pestis, and added Yersinia pestis to Yersinia
Eric Walker added Yersinia pestis to Yersinia, and added Yersinia to Yersiniaceae
Eric Walker added a number of topics and a number of links to Bubonic plague, and added Bubonic plague to Bacterial infection and Yersinia pestis