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Plague is a bacterial infection. Human cases of plague are very rare in Canada with the last case reported in 1939.



Plague is an infectious disease caused by the bacterium Yersinia pestis. There are two main clinical forms of plague infection: bubonic and pneumonic. It can be a very severe disease in humans. While bubonic plague has a mortality rate of 30% to 60%, pneumonic plague is almost always fatal when left untreated.
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