
When a ship sailed into one of the ports along England’s south coast in the summer of 1348, its unwitting crew also delivered ashore the most deadly cargo to ever reach the British Isles: Yersinia pestis, a bacterium causing bubonic plague. Having erupted out of Asia, the disease had travelled along the Silk Road and torn through Europe via rats roaming merchant ships.
The symptoms of such a virulent infection, which would devastate England’s infrastructure, were as dramatic as its spread. First a fever, cold and general flu-like symptoms, followed by blackening buboes forming in the joints, most commonly the groin or the armpits. It was these buboes that would later give the disease its nickname: the Black Death. Sometimes people survived this stage, but usually the infection would reach the bloodstream and death was inevitable – and swift.