Yersinia pestis

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  • Yersinia Pestis And Return Of The Black Death

    transported to humans through fleas, has been a worldwide issue from as far back as the year 1347 A.D. This disease has caused more than 200 million deaths since its first rampage in Europe. The bacteria Yersinia pestis has been researched to be the main cause of bubonic plague, but at one time there were many speculations as to the cause of this plague. Inspired by S. Scott and C. Duncan’s “Biology of plagues” and “Return of the Black Death”, George Christakos and Ricardo A. Olea believe that the bubonic plague is another deadly disease, such as Ebola or AIDS, which has the potential to thrive again and become resistant to the drugs that are used to treat said diseases. These authors say that most…

    Words: 1024 - Pages: 5
  • Yersinia Pestis: The Facts And Treatments Of The Black Death

    amount of life than any other known epidemic or war up to that point. The Black Death is broadly thought to have been the result of infection by the bacterium Yersinia pestis. 5 Facts: • Many doctors believed that bad smells could force out the plague. Therefore, treatments for the disease included applying feces and urine, and other substances that were much more likely to spread disease than to cure it. • Y. Pestis utilized the flea by blocking its digestive tract. The flea tries constantly to…

    Words: 1288 - Pages: 6
  • Yersinia Pestis: Origin And Routes Of Dissemination

    Origin and Routes of Dissemination Towards the end of the 1330s, a coccobacillus called Yersinia Pestis, which slumbered for centuries in the blood of rats underwent a deadly exodus. The rats were immune to the bacteria in their bloodstream, but not the fleas that fed on their blood. A toxin produced by Yersinia Pestis blocked the abdomen of the flea thus inhibiting it from swallowing the blood it sucked out of the rat. Then, when a flea bit a human, it would deposit the blood from the…

    Words: 1400 - Pages: 6
  • The Death Of Yersinia Pestis And The Bubonic Plague

    This virus is a gram negative rod shaped bacteria classified as coccobacillus. A coccobacillus has short rods that may be confused for a cocci shape. Y. Pestis is a nonmotile, nonsporulating, facultative anaerobe. The bacteria settles in the midgut of a flea and its plasmid is phospholipase D lined membrane allows the bacteria to survive among the digestive and intestinal juices. When the bacteria reproduces in the gut it forms a mass in the stomach going up into the esophagus, essentially…

    Words: 1074 - Pages: 4
  • Essay On The Black Plague

    decide whether or not that certain bacterial agent could be the cause. The five groups include: “timing – speed with which the epidemic spread; mortality rate – the percentage of the population that died during the epidemic, in toto and by gender; seasonality – the months of the year that exhibited the highest mortality; the agents of infection – the manner in which the disease spread; and symptoms” (Theilmann and Cate p. 372). For each type of bacterial agent they had, the scientist explain why…

    Words: 1042 - Pages: 5
  • The Black Death: The Cause And Effects Of The Plague

    “The Plague is an infectious, epidemic disease caused by a bacterium, Yersinia pestis, characterized by fever, chills, and prostration, transmitted to humans from rats by means of the bites of fleas” ("The Definition of Plague"). The Plague, which today is a disease barely heard of, was at one point in history an epidemic that killed almost one-third of Europe’s population, had unique symptoms, and spread very quickly. Today, people hear about receiving a cold or the flu. Usually these are…

    Words: 1265 - Pages: 6
  • Causes And Effects Of The Plague

    It is received by getting bit by a rodent or flea or when Yersinia pestis enters the bloodstream. The most serious and deadliest form is the pneumonic plague, although it is rare. It occurs when Yersinia pestis spreads to the lungs and causes pneumonia. This form of the plague is so dangerous that if an infected person coughs, the bacteria from their lungs is discharged into the air, giving anyone around him, the disease. This can lead to an epidemic. There are two types of pneumonic plague,…

    Words: 1104 - Pages: 5
  • The Consequences Of The Black Plague

    pestilence.” As the goods and people moved throughout the Silk Road, so did the bacteria that is responsible for the Black Plague. The bacterium, which is known as Yersinia pestis, traveled within merchants that ventured on the Silk Road. However, this particular type of bacterium cannot infect humans directly. Instead, this type of bacteria resides through fleas. The merchants that traveled with these fleas brought them along to the ports in the Genoese city of Chaffa. These fleas then…

    Words: 1221 - Pages: 5
  • Black Plague: The Black Death

    The king of France declared, in 1345, that the heavens were the cause of this pestilence. This was the first, and most commonly, accepted theory for the cause of the plague at the time, and it wasn’t until the reoccurring outbreaks that it was suspected to be a real disease. Hygiene at the time was below average, with grimy streets, diseased animals, and parasites everywhere; it wasn’t until the nineteenth century that people thought it was important to stay clean. With the badly kept condition…

    Words: 1378 - Pages: 6
  • The Black Plague: Three Causes Of The Black Death

    one of the worst disasters to ever hit mankind, claiming the lives of more than 25 million people in Europe during the 14th century (Benedictow 2005). It took only four short years for the Black Death to inflict its wrath from Asia to almost all of Europe because of the availability of commerce routes (McMullin 2003). The plague not only claimed the lives of so many, but it depressed the economy (Benedictow 2005). Massive labor shortages due to high rates of mortality increased economic,…

    Words: 739 - Pages: 3
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