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Leprosy is caused by the organism Mycobacterium leprae. It is not very contagious(difficult to transmit) and has a long incubation period(time before symptoms appear), which makes it difficult to determine where or when the disease was contracted.
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The organism that causes leprosy is a rod-shaped bacterium called Mycobacterium leprae. This bacterium is related to Mycobacterium tuberculosis, the causative agent of tuberculosis.
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