Mycobacterium leprae

species of bacterium; form of leprosy

Mycobacterium leprae is a bacteria. It causes the disease, leprosy, also known as Hanson's Disease. The bacterium was discovered in 1873 by a Norwegian doctor named Gerhard Armauer Hansen. M. leprae is a gram-positive, aerobic rod surrounded by the characteristic waxy coating unique to Mycobacteria. In size and shape, it closes resembles M. tuberculosis. Due to its thick, waxy coating, stains with carbol-fuchsin are used, rather than with the traditional Gram staining method.

Mycobacterium leprae
Microphotograph of Mycobacterium leprae taken from a skin lesion
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Binomial name
Mycobacterium leprae
Hansen, 1874