Thomas Francis, Jr.

Thomas Francis, Jr. (July 15, 1900October 1, 1969) was an American physician, virologist, and epidemiologist.

Francis was the first person to isolate influenza virus in America, and in 1940 showed that there are other strains of influenza, and took part in the development of influenza vaccines. As director of the University of Michigan Poliomyelitis Vaccine Evaluation Center, he conducted the epidemiology studies prior to the release of Jonas Salk's polio vaccine. He is also notable as Salk's postdoctoral advisor.


  • van Helvoort, T. Francis, Thomas, Jr. American National Biography Online Feb. 2000.

Search another word or see poliomyelitis-vaccineon Dictionary | Thesaurus |Spanish
Copyright © 2015, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature