leprosy bacillus

What Did Hansen Discover? Gerhard-Henrik Armauer Hansen, a Norwegian scientist, discovered Mycobacterium leprae When did Hansen discover leprosy? Gerhard Henrik Armauer Hansen radicalized the views on leprosy when he discovered the leprosy bacilli in 1873. How did Hansen discover leprosy? On his return to Bergen in 1871, Hansen launched his search for the causative agent