Alice Catherine Evans
A tenacious scientist who proved a dangerous germ jumped from cows to people, forcing America to make its milk safe.
1881–1975 (age 94)·American microbiologist·Birthday: January 29·The Gilded Age
Biography
Alice Evans entered science through a back door. With a bachelor's degree in agriculture, she started as a dairy bacteriologist for the U.S. Department of Agriculture, a role few women held. Her meticulous work led her to a disturbing hypothesis: the same microbe, *Brucella abortus*, that caused cows to miscarry could also make humans severely ill with undulant fever. The established, almost entirely male, medical community dismissed her findings for years, arguing a veterinary pathogen couldn't threaten people. Evans, persistent and precise, spent a decade compiling irrefutable evidence. Her vindication in the 1920s revolutionized public health, leading directly to the nationwide pasteurization of milk—a change that saved countless lives. She later became the first woman president of the Society of American Bacteriologists, a testament to her hard-won respect.
The Gilded Age
1860–1882
Born during or after the Civil War, they built industrial America — the railroads, the steel mills, the first skyscrapers. An era of massive wealth, massive inequality, and the belief that the future belonged to whoever could build it fastest.
Alice was born in 1881, placing them squarely in The Gilded Age. The events that shaped this generation — world wars, depression, and rapid industrialization — shaped the world they entered and the choices available to them.
#1 When Alice Was Born
The biggest hits of 1881
Alice's Life & Times
The world at every milestone
1881Born
President: Chester A. Arthur
1886Started school
Statue of Liberty dedicated in New York Harbor
President: Grover Cleveland
1894Became a teenager
President: Grover Cleveland
1897Could drive
President: William McKinley
1899Could vote
President: William McKinley
1902Turned 21
The eruption of Mount Pelee kills 30,000 in Martinique
President: Theodore Roosevelt
1911Turned 30
Triangle Shirtwaist Factory fire kills 146 in New York
President: William Howard Taft
1921Turned 40
First commercial radio broadcasts
President: Warren G. Harding"My Man" — Fanny Brice
1931Turned 50
The Empire State Building opens as the world's tallest
Gas: $0.17/galPresident: Herbert Hoover"Minnie the Moocher" — Cab CallowayBest Picture: Cimarron
1941Turned 60
Pearl Harbor attack brings the US into WWII
Gas: $0.19/galHome: $3,060Min wage: $0.30/hrPresident: Franklin D. Roosevelt"Chattanooga Choo Choo" — Glenn MillerBest Picture: How Green Was My Valley
1951Turned 70
First color TV broadcast in the US
Gas: $0.27/galHome: $7,925Min wage: $0.75/hrPresident: Harry S. Truman"Too Young" — Nat King ColeBest Picture: An American in Paris
1961Turned 80
Yuri Gagarin becomes the first human in space
Gas: $0.31/galHome: $12,500Min wage: $1.15/hrPresident: John F. Kennedy"Tossin' and Turnin'" — Bobby LewisBest Picture: West Side Story
1975Died at 94
Fall of Saigon ends the Vietnam War
Gas: $0.57/galHome: $27,600Min wage: $2.10/hrPresident: Gerald Ford"Love Will Keep Us Together" — Captain & TennilleBest Picture: One Flew Over the Cuckoo's Nest
Key Achievements
- Established the link between *Brucella abortus* in cattle and brucellosis (undulant fever) in humans.
- Her research was the foundational science that led to the mandatory pasteurization of milk in the United States.
- Became the first woman president of the Society of American Bacteriologists in 1928.
- Worked at the U.S. Public Health Service's Hygienic Laboratory, a precursor to the NIH.
Did You Know?
She contracted brucellosis herself in the laboratory, suffering from its debilitating symptoms for years.
She earned her MSc from the University of Wisconsin while working full-time for the USDA.
Despite her monumental public health contribution, she was never elected to the National Academy of Sciences.
She began her career making cheese and butter at the USDA before shifting to bacteriology.
“The discovery that a disease of animals is transmitted to man is not a welcome one.”
