Gerhard Armauer Hansen that the leprosy acts of 1877 and 1885 were passed, leading to a steady decline of the disease in Norway from 1,800 known cases in 1875 to just 575 cases in 1901. His distinguished work was recognized at the International Leprosy Congress held at Bergen in 1909. Hansen had suffered from syphilis since the 1860s but died of heart disease. He was an atheist. Gerhard Armauer Hansen 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. Hansen
Traditional Hausa medicine Traditional Hausa medicine The Hausa people are an African tribe originating from what is modern-day Nigeria. Their medicine is heavily characterized by Islamic influence from the East as well as traditional, African-style herbology, and religious practices which are still prevalent today. Many traditional healing methods such as religious and spiritual healing are often used alongside more modern scientific medicine among Hausa villages and cities. The bokaye and the yan bori are the most commonly known practitioners in Hausa society before the arrival of Islamic culture. The bokaye was an herbologist and subsisted on collecting and selling medical herbs and advice.