Black Death

Black Death Black Death Plague is a term applied randomly in the Middle Ages to each fatal epidemic diseases, but now restricted to an acute, infectious, transmissible disease of rodents and humans, caused by a short, thick bacillus, Yersinia pestis. In humans, wickedness occurs in three forms: bubonic plague, pneumonic plague, and septicemic plague. bubonic plague is the best-known form and is so called because it is characterized by the expression of buboes, or enlarged, inflamed lymph nodes, in the groin or armpit or on the neck.

Bubonic plague is transmitted by the bite of any of numerous insects that are normally par asitical on rodents, and that seek new hosts when the original host dies. The more or less important of these insects is the rat flea Xenopsylla cheopis, which is parasitic on the brown rat. untreated bubonic plague is fatal in 30 to 75 percent of all cases. The Black Death, the name later attached to the plague, ravaged Europe between 1347 and 1351, taking a owing(p) cost of life. M...If you want to get a full essay, run it on our website: BestEssayCheap.com

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