Coughing was another way which spread the plague. Although most scientists believe that the Black Death of the Middle Ages was bubonic plague, not everyone agrees. The spread of the disease was so fast that it puzzles experts. Perhaps, they argue, there was another cause?
A team of French archeologists have examined the teeth of plague victims (two adults and one child), found in Montpellier, to determine whether there might be another reason for the scourge.
Scientists did, indeed, find evidence of Yersinia pestis (the bacterium which causes Bubonic plague) in the remains of those who were buried in the mass grave. They also found "one mutation in the amplified pla gene fragment, the significance of which remains to be studied.