Heinrich Hermann Robert Koch was a German physician and microbiologist. He won the 1905 Nobel Prize in Physiology or Medicine "for his investigations and discoveries in relation to tuberculosis". The Nobel Prize in Physiology or Medicine 1905, announced October 12, 1905. Robert Koch, “for his investigations and discoveries in relation to tuberculosis”. Robert Koch: born 1843, Clausthal (now Clausthal-Zellerfeld), Germany. Wiki link Data: the Nobel Foundation (CC0).