The name "Black Death" was
not used in the middle ages. Rather it was created by the writers
of textbooks to convey how horrible and damaging this disease proved to
Yersinia pestis has
been isolated from all continents except for Australia and Antarctica.
It is the contributing agent to plague. In order to spread quickly
the plague must be transferred by water, which is the reason for such
devastation at port cities.
pestis is very sensitive to heat and drought. It is said to be
regarded as one of the most pathogenic bacterial species.