““Krause and his team unearthed the evolution of Yersinia pestis, and the genomic tracks of its terrible journey. An earlier study had shown that, just like the Plague of Justinian, the Black Death in the 1340s had also originated in China. With a publicly available database of the full sequence, the history and the genetics can be aligned. Over a five-year period we can track a course from Russia to Constantinople, to Messina, to Genoa, Marseille, Bordeaux, and finally London. All these ports acted as points from which radiation of the plague could crawl inland. En route, it claimed the lives of some 5 million people.””