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Generically, a plague is a highly infectious epidemic disease, especially one with a high rate of fatality that spreads widely and rapidly through a population of animals.

Specifically, the plague refers to a virulent, infectious disease that is caused by the bacterium Yersinia pestis transmitted primarily by the bite of fleas from an infected rodent. In humans the disease is called the "black death" as it causes black discolouration of the skin.

A plague can also be an influx or infestation of large number of destructive or unwanted animals - a plague of ants

A plague can also refer to an annoying child.

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7y ago

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