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	Module I

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	Introduction - Purpose - Tools & Applications - Influencing Factors - Infectious Diseases - Objectives
	Key Epi Terms - Epidemiology - Patterns of Infectious Disease - Natural History of Disease
	Evolution of Epidemiology - Supernatural Causation - Environmental Explanations - Host Factors - Toward a Modern Approach - Modern Epidemiology
	Summary
	Quiz
	Outline

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Introduction to Epidemiology - Module I

Purpose of Epidemiology

To better understand the burden and causes of health
problems in human populations, and
To make changes that decrease risk and improve health.