William Hammon
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William McDowell Hammon (July 4, 1904 – September 19, 1989) was an American physician and researcher, best known for his work on
poliomyelitis Poliomyelitis, commonly shortened to polio, is an infectious disease caused by the poliovirus. Approximately 70% of cases are asymptomatic; mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe sym ...
. In his early twenties and prior to becoming a research physician, Hammon worked for four years as a medical
missionary A missionary is a member of a Religious denomination, religious group which is sent into an area in order to promote its faith or provide services to people, such as education, literacy, social justice, health care, and economic development.Tho ...
in the former
Belgian Congo The Belgian Congo (french: Congo belge, ; nl, Belgisch-Congo) was a Belgian colony in Central Africa from 1908 until independence in 1960. The former colony adopted its present name, the Democratic Republic of the Congo (DRC), in 1964. Colo ...
. After returning, he received his undergraduate degree from Allegheny College in 1932. Completing his medical training at
Harvard Medical School Harvard Medical School (HMS) is the graduate medical school of Harvard University and is located in the Longwood Medical Area of Boston, Massachusetts. Founded in 1782, HMS is one of the oldest medical schools in the United States and is consi ...
in 1936, Hammon then studied with the
bacteriologist A bacteriologist is a microbiologist, or similarly trained professional, in bacteriology -- a subdivision of microbiology that studies bacteria, typically Pathogenic bacteria, pathogenic ones. Bacteriologists are interested in studying and learnin ...
Hans Zinsser Hans Zinsser (November 17, 1878 – September 4, 1940) was an American physician, bacteriologist, and prolific author. The author of over 200 books and medical articles, he was also a published poet. Some of his verses were published in '' ...
, receiving a
Master of Public Health The Master of Public Health or Master of Philosophy in Public Health (M.P.H.), Master of Science in Public Health (MSPH), Master of Medical Science in Public Health (MMSPH) and the Doctor of Public Health (Dr.P.H.), International Masters for Healt ...
degree in 1938, and a Doctor of Philosophy degree in 1939. During this period Hammon co-discovered the first
vaccine A vaccine is a biological Dosage form, preparation that provides active acquired immunity to a particular infectious disease, infectious or cancer, malignant disease. The safety and effectiveness of vaccines has been widely studied and verifie ...
for feline panleucopenia. Hammon was presented with the Medal of Freedom in 1946 by President Harry Truman. In 1949 Harmon was elected president of the American Society for Microbiology.


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* * 1904 births Harvard Medical School alumni Recipients of the Medal of Freedom 1989 deaths Medical missionaries American virologists 20th-century American physicians Belgian Congo people Presidents of the American Society of Tropical Medicine and Hygiene {{US-physician-stub