lecture 16 - Lecture Goals Lecture 16 Infectious Disease...

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1 Lecture 16 Infectious Disease Epidemiology II Lecture Goals { Discuss steps to follow when investigating an outbreak and describe what each step entails { Draw epicurves for different modes of transmission { Calculate primary and secondary attack rates Definitions { Endemic – background cases; expected number of cases { Epidemic – excess number of cases in a localized area { Pandemic – excess number of cases worldwide Levels of Disease 0 5 10 15 20 25 30 TIME CASES Epidemic Endemic A pandemic occurs because… Entire populations are susceptible There are no effective treatments for the outbreak Types of Epidemics
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