In public health, the “pump handle” is a metaphor for which of the following? a. convincing policymakers to take an action to protect public healthb. assuring a safe drinking water supplyc. discovering the cause of a public health problemd. removing the source of a public health problem
removing the source of the public health problem
The “pump handle” is a metaphor for assuring a safe drinking water supply. It refers to the action of pumping a well handle up and down to draw water to the surface. In the mid-19th century, Dr. John Snow used this metaphor to demonstrate that contaminated water from a single pump on Broad Street in London was responsible for a cholera outbreak. By removing the pump handle, the source of the outbreak was eliminated, and the spread of the disease was stopped. Since then, the “pump handle” has become a symbol for the importance of a safe drinking water supply in protecting public health.
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