Which site is known as the focal point of Dr. Snow's cholera investigation?

The site known as the focal point of Dr. John Snow's cholera investigation is the Broad Street pump. Dr. Snow, often hailed as the father of modern epidemiology, conducted a groundbreaking investigation during the 1854 cholera outbreak in London. He mapped the cases of cholera and noticed a significant cluster of cases around the Broad Street area.

By analyzing the data, he hypothesized that contaminated water was the primary cause of the disease. To test his theory, he famously removed the handle of the Broad Street pump, which drastically reduced the number of cholera cases in the area. This pivotal action not only demonstrated the link between water supply and disease transmission but also underscored the importance of clean water access and sanitation in public health.

The other locations, while relevant to the context of the investigation, do not serve as the central focus. The Thames River, for example, was known for its pollution and contributed to the understanding of waterborne diseases, but it was not where Snow pinpointed the specific source of the outbreak. St. James's Park and Victoria Station do not hold significant relevance to Snow's findings related to the outbreak. Thus, the Broad Street pump remains a landmark in public health history due to Dr. Snow