Original: Gerhard Henrik Armauer Hansen (29 July 1841 – 12 February 1912) was a Norwegian physician, remembered for his identification of the bacterium Mycobacterium leprae in 1873 as the causative agent of leprosy.
Simplified: Gerhard Hendrik Armauer Hansen (July 29, 1841 - February 12, 1912) was a Norwegian doctor and scientist who was famous for discovering the bacteria that causes leprosy in 1873.