Dr John Snow - proving a theory

The video discusses the theory that cholera in London was spread through contaminated water, particularly from cesspools and sewage affecting town wells and rivers. In August 1854, Soho experienced a severe cholera outbreak. The narrator, living nearby, investigated the outbreak, focusing on the Broad Street pump as a potential contamination source. The investigation involved gathering data from hospitals and public records to confirm if victims consumed water from the pump.

How many fatal attacks of cholera occurred within 10 days near Cambridge Street and Broad Street?

What actions did the teacher take to investigate the cholera outbreak?