Pathologist.
Simeon Burt Wolbach (July 3, 1880 – March 19, 1954) was an American pathologist, researcher, teacher, and journal editor who elucidated the infection vectors for Rocky Mountain spotted fever and epidemic typhus. He was president of the American Association of Pathologists and Bacteriologists and the American Society for Experimental Pathology. The bacterial genus Wolbachia is named after him.