Typhoid Mary is best described as which of the following?

Typhoid Mary is best described as which of the following?

• A. A historian who studied outbreaks
• B. A chronic carrier of Salmonella Typhi responsible for multiple outbreaks
• C. A nurse who vaccinated thousands
• D. A reformer who improved sanitation in New York

Answer: (B)

This question centers on how asymptomatic carriers can influence the spread of disease and how public health responded in the Progressive Era. Salmonella Typhi, the bacterium that causes typhoid fever, can be carried in a person for years without causing illness, with the carrier shedding the bacteria and potentially infecting others—often through food handling. Typhoid Mary—Mary Mallon—was a cook in New York City who did not exhibit typhoid symptoms herself but harbored the disease and caused several outbreaks by preparing meals for households. When investigators traced the outbreaks to her, public health authorities quarantined her to prevent further transmission, illustrating the era’s willingness to impose isolation on individuals to protect the community. Her case helped highlight the importance of understanding carrier states and improving food-safety practices and disease surveillance. She wasn’t a historian, a nurse who vaccinated thousands, or a reformer who worked on sanitation reforms, which is why those descriptions don’t fit the historical record of this figure.

This question centers on how asymptomatic carriers can influence the spread of disease and how public health responded in the Progressive Era. Salmonella Typhi, the bacterium that causes typhoid fever, can be carried in a person for years without causing illness, with the carrier shedding the bacteria and potentially infecting others—often through food handling.

Typhoid Mary—Mary Mallon—was a cook in New York City who did not exhibit typhoid symptoms herself but harbored the disease and caused several outbreaks by preparing meals for households. When investigators traced the outbreaks to her, public health authorities quarantined her to prevent further transmission, illustrating the era’s willingness to impose isolation on individuals to protect the community. Her case helped highlight the importance of understanding carrier states and improving food-safety practices and disease surveillance.

She wasn’t a historian, a nurse who vaccinated thousands, or a reformer who worked on sanitation reforms, which is why those descriptions don’t fit the historical record of this figure.