Dr John Snow - gathering evidence

The video discusses the investigation of a Cholera outbreak using a geographical grid to map deaths and identify the Broad Street pump as the source. The investigator tracked cases to local establishments and noted the use of pump water in popular drinks like sherbet, which contributed to the spread of the disease.

What method did the investigator initially use to analyze the outbreak?

• Consulting with medical experts

• Conducting interviews with patients

• Using a geographical grid to map deaths

• Testing water samples from various sources

Where did the investigator find additional cases of Cholera linked to the pump?

• Hospitals and clinics

• Nearby schools and businesses

• Public transportation systems

• Residential areas far from the pump

What did the coffee shop keeper report about her customers?

• They preferred bottled water

• Nine of them contracted Cholera

• They avoided drinking water

• They were unaffected by the outbreak

What popular drink was made using the pump water?

• Lemonade

• Sherbet

• Coffee

• Iced tea

What ultimately convinced the investigator that the pump was the source of the outbreak?

• A confession from a local resident

• The combination of evidence collected

• A scientific study

• A government report