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Epidemiology
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Epidemiology is the study of how disease is distributed in populations and what factors determine that distribution, work that underlies public health practice from outbreak investigation to prevention policy.
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Founded Year Central QuestionWhat in a population, rather than in any one patient, explains why a disease spreads or a health outcome occurs, and what intervention at the population level would change that outcome? 2 ScopeEpidemiology is the study of the distribution and determinants of health-related states and events in specified populations, and the application of that study to controlling health problems. 2 SignificanceJohn Snow's investigation of the 1854 Broad Street cholera outbreak in London, tracing cases to a single contaminated water pump years before the germ theory of disease was established, is widely regarded as the founding achievement of modern epidemiology. 2 Cross-Tradition Connections
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