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Essay Galaxy - The Plague
The Plague
Since the reign of Emperor Justinian in 542 A.D., man has one unwelcome organism
along for the ride, Yersinia pestis. This is the bacterium more commonly know as
the Black Death, the plague. Plague is divided into three biotypes, each
associated with one of three major pandemics occurring in history. Each of these
biotypes are then divided into three distinct types, classified by method of
infection.
The most widely know is bubonic, an infection of plague that resides in the
lymph nodes, causing them to swell. The Black Death of the 14th century was
mainly of this type. Bubonic plague is commonly spread through fleas that have
made a meal from an infected Rattus rattus. In the American and Canadian west,
from Texas and Oklahoma in the east to the Pacific Ocean in the west, it is most
often transmitted from species of squirrels. The last occurrence of
transmissions from rat....
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Number Of Pages: 3 |
Number Of Words: 595 |
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