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Unformatted text preview: of data pertaining to the occurrence of specific diseases. Analysis and interpretation of these data. Dissemination of diseaserelated information. Epidemic Threshold Epidemic Threshold The minimum number of cases (or deaths) that would support the conclusion than an epidemic was underway (the number above that which we would expect to occur by chance alone) Historical Antecedents Historical Antecedents Environment and disease Use of mortality counts Use of natural experiments Identification of specific agents of disease The Environment The Environment Hippocrates wrote On Airs, Waters, and Places in 400 BC. He suggested that disease might be associated with the physical environment. This represented a movement away from supernatural explanations of disease causation. Use of Mortality Counts Use of Mortality Counts John Graunt, in 1662, published Natural and Political Observations Made upon the Bills of Mortality. John Graunt’s Contributions John Graunt’s Contributions Recorded seasonal variations in b...
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This note was uploaded on 04/12/2009 for the course HED 10520 taught by Professor Edmundson during the Spring '08 term at University of Texas at Austin.
- Spring '08