Kaplan Nursing Practice Questions - Kaplan Nursing School Admissions Test Exam

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Read the passage and answer the question. In 1854, physician John Snow traced an outbreak of cholera in London's Soho district to a single contaminated water pump on Broad Street. By plotting case locations on a map, he demonstrated a clear geographic cluster. Although germ theory was not yet established, his removal of the pump handle dramatically reduced new infections. Snow's methodical work is now considered a founding moment of modern epidemiology. Which of the following can be inferred from the passage?

John Snow believed cholera was caused by bacteria. Most physicians in 1854 understood the cause of cholera. Mapping disease cases can reveal patterns invisible from individual reports. The Broad Street pump was the only source of contaminated water in London.

Correct Answer:

Mapping disease cases can reveal patterns invisible from individual reports.

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