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Recommended: Bubonic plague research paper

Out of many diseases in the world, one has scared and killed millions of people in the Middle Age. This disease is called bubonic plague, sometimes known as The Black Death. Through information on bubonic plague, you will be informed about how to prevent the infection of bubonic plague.
Bubonic plague is caused by a bacterium called Yersinia pestis. Yersinia pestis is located in the domain Bacteria because Yersinia pestis is a unicellular bacterium. Also, because of its lack of nuclear membrane and DNA that is not organized into chromosomes, Yersinia pestis is located in the kingdom Prokaryote (“Classification”).
Bubonic plague started to spread by fleas infected with Yersinia pestis. Fleas find a victim and try to feed by injecting its sucking mechanism, but the Yersinia pestis block the flea's esophagus and pharynx, preventing the flea from obtaining any blood. This causes the flea to continuously puncture its food source, in turn regurgitating into the wound and injecting it with the plague bacilli (“Hosts”). This caused the infections to spread to rats and rodents, flea’s main host.
In Middle Age of Europe, people traded in crowded towns by ships. Because ships and towns were filled with infected rodents bubonic plague began to spread faster and wider (Ollhoff 3~4). Getting bitten by infected fleas was not the only cause of the transmission of bubonic plague. Contact with contaminated fluid or tissue or infectious droplets also caused bubonic plagues ("Ecology and Transmission").
Many people hunt in the United States. Out of these people, bubonic plague has been more common among men because of the increased outdoor activities that put them at higher risk. 999 confirmed or probable human plague cases have occurred in the Un...

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...cation.htm>.
"Ecology and Transmission." Centers for Disease Control and Prevention. Centers for Disease Control and Prevention, 13 June 2012. Web. 01 May 2014. .
"Hosts." Hosts. N.p., n.d. Web. 03 May 2014. .
"Maps and Statistics." Centers for Disease Control and Prevention. Centers for Disease Control and Prevention, 23 Apr. 2013. Web. 03 May 2014. .
Ollhoff, Jim. The Black Death. Edina, MN: ABDO Pub., 2010. Print.
"Plague." Forms. N.p., n.d. Web. 03 May 2014. .
"Plague: MedlinePlus Medical Encyclopedia." U.S National Library of Medicine. U.S. National Library of Medicine, n.d. Web. 30 Apr. 2014. .

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