Leprosy (Hansen’s disease) mainly affects the skin, the peripheral nerves, mucosal surfaces of the upper respiratory tract and the eyes. Leprosy is known to occur at all ages ranging from early infancy to very old age. Leprosy is curable and treatment in the early stages can prevent disability.
Leprosy is likely transmitted via droplets, from the nose and mouth, during close and frequent contact with untreated cases.
For full information please refer to the WHO fact sheets: