Snow set out to prove his theory that unclean water caused the spread of cholera. He used a map to plot where cholera deaths had taken place in the area around his medical practice. The map showed ...

A team of United States-based scientists and engineers have developed a mobile phone app that predicts and maps cholera, a contagious and sometimes deadly disease that in the past killed millions ...

(As portrayed by Benoit Girard in Canada: A People's History) Three days later, cholera took its first victim. The illness spread like wildfire all the way to Montreal and then to Upper Canada.

(As portrayed by Benoit Girard in Canada: A People's History) Three days later, cholera took its first victim. The illness spread like wildfire all the way to Montreal and then to Upper Canada.