Definition

Proper noun * Typhoid Mary: The historical nickname for Mary Mallon, an Irish-born cook in the United States who was the first person identified as an asymptomatic carrier of the pathogen associated with typhoid fever. She unknowingly infected dozens of people in the early 20th century.

Usage Examples

• Proper noun:
  • Public health officials eventually quarantined Mary Mallon for over two decades.
  • The case of Mary Mallon is a famous study in epidemiology and public health ethics.

Advanced Usage

• "a Mary Mallon" / "a Typhoid Mary": Used metaphorically to describe a person who, often unknowingly, spreads something undesirable (e.g., disease, gossip, negative influence).
  • He became the office Mary Mallon, spreading rumors that caused widespread distrust.
  • In the context of computer viruses, an infected user can become a digital Typhoid Mary.

Variants and Related Words

• Typhoid Mary (noun): The common epithet for Mary Mallon, now often used as the primary term in general discourse.
  • The term "Typhoid Mary" originates from the case of Mary Mallon.

Synonyms

• Carrier (noun): In medicine, a person or organism that harbors a pathogen without showing symptoms and can transmit it to others.
• Superspreader (noun): (Modern epidemiological term) An individual who is responsible for transmitting an infection to a disproportionately large number of other individuals.

Related Idioms and Phrases

• To be branded a Typhoid Mary: To be unfairly labeled as the source of a problem or contagion.
  • After the data breach, the IT manager was branded a Typhoid Mary, though the fault was systemic.

Noun

1. United States cook who was an immune carrier of typhoid fever and who infected dozens of people (1870-1938)