William F. Wells

William Firth Wells
Bornc. 1886
Boston, Massachusetts, U.S.
Died(1963-09-08)September 8, 1963 (about 75)
Baltimore, Maryland, U.S.
SpouseMildred W. Wells
Academic background
Alma materMassachusetts Institute of Technology (1909)
Academic work
DisciplinePublic health
Sub-disciplineAir sanitation
InstitutionsHarvard School of Public Health
University of Pennsylvania
Johns Hopkins University
Notable ideasAirborne transmission of measles and tuberculosis

William Firth Wells (c. 1886 – September 8, 1963) was an American scientist and sanitary engineer. In his early career, he pioneered techniques for the aquaculture of oysters and clams. He is best known for his work on airborne infections. Wells and his wife, Dr. Mildred Weeks Wells, identified that measles and tuberculosis could be transmitted through the air via the nuclei of evaporated respiratory droplets. They developed the Wells curve to describe what happens to respiratory droplets after they have been expelled into the air, and Wells contributed to the Wells-Riley model to predict how the likelihood of infection varies with factors like room ventilation. In 1955, Wells published a major monograph Air Contagion and Air Hygiene synthesizing his lifetime of work on airborne disease transmission. Wells' work experienced a resurgence of interest after 2020, due to its relevance to the COVID-19 pandemic.