In 1854, data visualization was used as a persuasion technique to convince city officials in London that cholera was due to contaminated water and not bad air, as was commonly thought. Over 160 years later, BI is becoming a powerful tool for infectious disease surveillance. Review the following websites and then answer the discussion question that follows.

 

• Visit the website John Snow and the Broadstreet Pump and learn about how data visualization in 1854 was used to convince London officials that the cause of cholera was in the water supply. Also view his map: r2c2_120c.jpg 
• Visit the website http://healthmap.org and learn how data visualization and data mining are being used to track and predict infectious disease outbreaks today.
• Lessons from John Snow https://journalofethics.ama-assn.org/article/lesson-john-snow-and-broad-street-pump/2009-06

What did John Snow research? What was he trying to solve?  

How did data visualization help convince the London officials to determine what to do? 

What 3 things did you find most interesting about the Health Map? Why?