In this video segment adapted from Rx for Survival, actors portray how John Snow, a London physician, traced a major outbreak of cholera in the 1850s to its source. Using logic, statistics, and mapping, Snow rejected the idea that cholera was carried in a cloud of bad air. Instead, he believed contaminated water was responsible for spreading the disease among the local population. Snow’s surveillance and response tactics would become a foundation of modern epidemiology—the science of public health that is built on a working knowledge of probability, statistics, and sound research methods. A background essay, discussion questions, and standards correlations are also provided.


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Grade 6,NSDL,Grade 8,Grade 9,Using technology,Social Sciences,Grade 7,Science process skills,NSDL_SetSpec_1007936,Hypothesizing,Grade 11,Grade 12,Life Science,Grade 10,Middle School,Vocational/Professional Development Education,Disease,History and nature of science,Science and technology,History/Policy/Law,Chemistry,Personal health,Historical perspectives,Science as inquiry,General,oai:nsdl.org:2200/20120114184950869T,Nature of science and technology,High School,Personal and social issues,Physical science,Education,Technology



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