Typhoid Mary

Typhoid Mary (also known as Mary Mallon) was an Irish-born cook believed to have infected 51 people, three of whom died, with typhoid fever, and the first person in the United States identified as an asymptomatic carrier of the disease. Because she persisted in working as a cook, by which she exposed others to the disease, she was twice forcibly isolated by authorities, and died after a total of nearly three decades in isolation.

Early life

Mary Mallon was born in 1869 in Cookstown, County Tyrone, in what is now Northern Ireland. Presumably, she was born with typhoid because her mother was infected during pregnancy.

Immigration to the United States

At the age of 15, Mallon emigrated from Ireland to the United States. She lived with her aunt and uncle for a time and worked as a maid, but eventually became a cook, a profession she was proud of and worked in for affluent families.

Career

From 1900 to 1907, Mallon worked as a cook in the New York City area for seven families. In 1900, she worked in Mamaroneck, New York, where, within two weeks of her employment, residents developed typhoid fever. In 1901, she moved to Manhattan, where members of the family for whom she worked developed fevers and diarrhea, and the laundress died. Mallon then went to work for a lawyer and left after seven of the eight people in that household became ill.

Identification as Typhoid Carrier

In 1906, Mallon was hired by Walter Bowen, whose family lived on Park Avenue. Their maid got sick on January 23, 1907, and soon Charles Warren’s only daughter got typhoid and died. This case helped to identify Mallon as the source of the infections.

Later life and death

Mallon was twice forcibly isolated by public health authorities and died after a total of nearly three decades in isolation.

Legacy

Mallon's case has led to numerous ethical discussions about the balance between public health and individual rights. Her life story is the subject of various books, plays, and movies.

Typhoid Mary Resources
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