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        Part of RX For Survival: A Global Health Challenge
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        John Snow: Pioneer of Epidemiology

        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. This resource is part of the Environmental Public Health collection.

        This media asset was adapted from Rx for Survival -- A Global Health Challenge: "How Safe Are We?".

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