1907 Nobel Laureate in Physiology or Medicine
"in recognition of his work on the role played by protozoa in causing diseases"
"Laveran discovered the cause of malaria in the course of the autopsies he conducted on malaria victims. He found the causative organism to be a protozoan
which he named Oscillaria malariae
, though it was later renamed Plasmodium
See: Robert Ross
(also a Nobel laureate) who proved Laveran's discoveries.
1906 - Santiago Ramón y Cajal | 1908 Ilya Mechnikov