June 18th
Born June 18, 1845; died May 18, 1922 at the age of 76.
Charles Louis Alphonse Lavaran was a French physician, pathologist and parasitologist who, as a French military surgeon in Algeria, discovered a parasite that causes human malaria in red blood cells. He founded the medical field of protozoology and did important work on other protozoal diseases, including sleep disease and kala-azar. From 1896 he spent the rest of his life as a researcher at the Pasteur Institute in Paris.
