Dr. Charles Wardell Stiles

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Charles Wardell Stiles

Birthdate: (73)
Birthplace: Spring Valley, NY, United States
Death: January 21, 1941 (73)
Baltimore, MD, United States
Immediate Family:

Son of Rev. Samuel Stiles and Elizabeth "Lizzie" Stiles
Husband of Virginia Stiles
Father of Virginia Ruth Fordyce Johnson and Elizabeth Stiles
Brother of Anna Josephine Stiles

Occupation: Zoologist
Managed by: Private User
Last Updated:

About Dr. Charles Wardell Stiles


Charles Wardell Stiles (May 15, 1867 – January 24, 1941) was an American parasitologist born in Spring Valley, New York.


He studied at Wesleyan University in Connecticut (1885-86), Collège de France (1886-87), the University of Berlin (1887-89) and the University of Leipzig (1889-90). In 1891 he continued his education at the zoological station in Trieste and at the Institut Pasteur in Paris. He obtained his doctorate in Leipzig under the direction of Rudolf Leuckart (1822-1898).

He taught classes in medical zoology at Johns Hopkins School of Medicine and at Georgetown University. He also worked as a zoologist for the U.S. government at the Bureau of Animal Industry in the Department of Agriculture (1891-1902), and was later chief zoologist at the Hygienic Laboratory of the US Public Health and Marine Hospital Service (1902-1931). In addition, he helped establish the Rockefeller Sanitary Commission for the Eradication of Hookworm Disease. In 1921 Stiles was awarded the Public Welfare Medal from the National Academy of Sciences.

Stiles is remembered for his work involving parasitic diseases such as trichinosis and hookworm. While working at the Department of Agriculture, he identified a new species of hookworm called Necator americanus. In the early part of the 20th century he was scientific advisor to the Rockefeller Sanitary Commission. Here he worked on a campaign to eradicate hookworm, especially in the American South. He also dealt with health and sanitation issues concerning mining and cotton mill workers. Stiles was secretary of the International Commission of Zoological Nomenclature, a group involved in setting standards regarding zoological classifications.

Selected writings

"Trichinosis in Germany", 1901
"Index-Catalog of Medical and Veterinary Zoology", (1902–20)
"Report upon the prevalence and geographic distribution of hookworm disease (uncinariasis or anchylostomiasis) in the United States", 1903
"A zoological investigation into the cause, transmission, and source of Rocky Mountain "spotted fever", 1905
"A statistical study of the prevalence of intestinal worms in man", 1906
"The Sanitary Privy: Its Purpose and Construction", 1910
"Key-catalogue of the Protozoa reported for man", 1925
"Key-catalogue of the worms reported for man", 1926
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Dr. Charles Wardell Stiles's Timeline

May 15, 1867
Spring Valley, NY, United States
August 24, 1899
Age 32
Berlin, Germany
December 18, 1904
Age 37
Washington, DC, United States
January 21, 1941
Age 73
Baltimore, MD, United States