The Broad Street Pump outbreak is associated with which public health pioneer?

The Broad Street Pump outbreak is associated with which public health pioneer?

• A. Louis Pasteur
• B. John Snow
• C. Edward Jenner
• D. Robert Koch

Answer: (B)

Understanding how outbreaks are investigated is being tested here. The Broad Street Pump outbreak is a landmark example of using data and local mapping to identify the source of transmission. John Snow analyzed who was getting sick, where they lived, and which water sources they drank from. By plotting cases around the Broad Street pump, he showed that many infections clustered near that supply, supporting the idea that cholera spread through contaminated water rather than through the air. When he and others recommended removing the pump handle, new cases declined, demonstrating a practical intervention based on epidemiologic evidence. This moment helped establish core public health practices: collecting and mapping data, testing hypotheses about transmission, and acting to interrupt transmission. The other figures mentioned made major contributions to health science—Pasteur with germ theory and vaccines, Jenner with vaccination, and Koch with microbiology methods and disease causation—but the Broad Street episode is most famously linked to Snow’s outbreak investigation.

Understanding how outbreaks are investigated is being tested here. The Broad Street Pump outbreak is a landmark example of using data and local mapping to identify the source of transmission. John Snow analyzed who was getting sick, where they lived, and which water sources they drank from. By plotting cases around the Broad Street pump, he showed that many infections clustered near that supply, supporting the idea that cholera spread through contaminated water rather than through the air. When he and others recommended removing the pump handle, new cases declined, demonstrating a practical intervention based on epidemiologic evidence. This moment helped establish core public health practices: collecting and mapping data, testing hypotheses about transmission, and acting to interrupt transmission. The other figures mentioned made major contributions to health science—Pasteur with germ theory and vaccines, Jenner with vaccination, and Koch with microbiology methods and disease causation—but the Broad Street episode is most famously linked to Snow’s outbreak investigation.