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The Bubonic Plague. The Bubonic Plague is one of the most deadly diseases
of all time as well as one of the most famous. Although ...
The Bubonic Plague. The Bubonic Plague is one of the most deadly diseases
of all time as well as one of the most famous. Although ...
Bubonic Plague. Bubonic Plague The bubonic plague was an epidemic to hit most of
Europe and the Mediterranean area in the year 1347 until the year 1351. ...
Bubonic Plague. The History and the Present State of the Bubonic Plague The Bubonic
Plague got it's name because of the symptoms of the disease. ...
What is the Bubonic Plague? What is the Bubonic Plague? The Bubonic Plague
is a disease that is caused by a germ called Yersinia pestis. ...
Submitted by natbell on April 20, 2008
Category: Science
Words: 595 | Pages: 3
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Yersinia pestis: “The Bubonic Plague Epidemic”
The bubonic plague (also known as the “Black Death”) is one of the deadliest epidemics, eventually turning pandemic, in human history. The bubonic plague began in Europe around 1347 and lasted until 1353. The result of this epidemic killed more than 25 million people. At the time, this was more than a quarter of Europe’s population.
The pathogen causing this deadly, historic disease is known as Yersinia pestis. Y. pestis is a gram negative bacteria and a facultative anaerobe. This bacterium is bacillus shaped with unusual bi-polar staining and capsules. Its capsule and enveloped proteins protect against phagocytosis and foster intracellular growth. It belongs to the Enterobacteriaceae family, which causes most cases of severe diarrhea.
Y. pestis begins its life cycle like all bacteria. After invasion of the host, the bacterium begins the lag phase. During this phase, the bacterium has little growth. It uses this period for adjustment and enlargement. The next phase is the exponential growth phase. During this phase, maximum growth is obtained. The bacterium will remain in this stage until nutrients is no longer available. The third phase is the stationary phase. Rate of cell growth and rate of cell death becomes equal in this phase due to lack of nutrients. The last phase of the bacteria’s life cycle is the death phase. The lack of nutrients in the environment causes death of the cell.
Y. pestis enters lymph nodes of host. An incubation period of 2-6 days occurs before symptoms appear. During the incubation period, the bacterium is actively replicating. After incubation, symptoms in the host suddenly appear and the disease is now lethal. Symptoms include lack of energy, fever, headache, and chills. Swelling of lymph nodes begin to emerge, resulting from buboes. Buboes are normally found in the groin and armpit.
Y. pestis is...
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