Charles Louis Alphonse Laveran
The Nobel Prize in Physiology or Medicine 1907
Born: 18 June 1845, Paris, France
Died: 18 May 1922, Paris, France
Affiliation at the time of the award: Institut Pasteur, Paris, France
Prize motivation: "in recognition of his work on the role played by protozoa in causing diseases."
Prize share: 1/1
In the tropics malaria is a common disease that causes high fever and other symptoms. By the middle of the 19th century, it was clear that many diseases are caused by microorganisms, and a great many people suspected that malaria was caused by a bacterium. After examining blood from people infected with malaria, Alphonse Laveran in 1889 was able to definitively show that malaria is caused by another type of single-celled organism, a protozoan of the Plasmodium family, which attacks red blood cells. He also identified other single-celled parasites that cause other diseases.