Gerhard Armauer Hansen, Norwegian physician (died 1912)

Gerhard Henrik Armauer Hansen was a Norwegian physician, remembered for his identification of the bacterium Mycobacterium leprae in 1873 as the etiologic agent of leprosy. His distinguished work was recognized at the International Leprosy Congress held at Bergen in 1909.

July 29 is the 210th day of the year in the Gregorian calendar; 155 days remain until the end of the year.