Born: 11 December 1843, Clausthal (now Clausthal-Zellerfeld), Germany
Died: 27 May 1910, Baden-Baden, Germany
Affiliation at the time of the award: Institute for Infectious Diseases, Berlin, Germany
Prize motivation: "for his investigations and discoveries in relation to tuberculosis"
Field: bacteriology, disease transmission
Prize share: 1/1
Tuberculosis (TB) is a serious illness affecting tissue, especially in the lungs. Robert Koch, who had conducted a range of important studies on illnesses caused by microorganisms, discovered and described the TB bacterium in 1882. He later studied tuberculin, a substance formed by tubercle bacteria. It was hoped it could be used as a cure for TB, but proved ineffective. Robert Koch didn't believe there was a connection between TB in humans and animals, but he was not entirely correct.
"in recognition of his work on the role played by protozoa in causing diseases"
"for his work on typhus"
"for his work on malaria, by which he has shown how it enters the organism and thereby has laid the foundation for successful research on this disease and methods of combating it"