Leprosy Mycobacterium leprae ·Acid-fast rod that grows best at30°C Grows in peripheral nerves and skin cells Transmission requires prolonged contact with an infected person Tuberculoid (neural)form:Loss of sensation in skin areas;positive lepromin test Lepromatous (progressive)form:Disfiguring nodules over body;negative lepromin test • Mycobacterium leprae • Acid-fast rod that grows best at 30°C • Grows in peripheral nerves and skin cells • Transmission requires prolonged contact with an infected person • Tuberculoid (neural) form: Loss of sensation in skin areas; positive lepromin test • Lepromatous (progressive) form: Disfiguring nodules over body; negative lepromin test Leprosy