. . . . . "Mycobacterium leprae, also known as Hansen\u2019s coccus spirilly, mostly found in warm tropical countries, is a Gram-positive bacterium that causes leprosy (Hansen's disease). It is an intracellular, pleomorphic, acid-fast bacterium. M. leprae is an aerobic bacillus (rod-shaped) surrounded by the characteristic waxy coating unique to mycobacteria. In size and shape, it closely resembles Mycobacterium tuberculosis. Due to its thick waxy coating, M."@en . . "Mycobacterium leprae"@en . . . . .