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Introduction to Epidemiology and Surveillance
1. An Introduction to Epidemiology pt 01 Dr Alex Keenan, Epidemiology and Surveillance Analyst, Cheshire & Merseyside HPU 27 th April 2010
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7. Surveillance Systems Database Policy makers PCTs / LAs / SHAs Health Practitioners Dissemination Laboratory / clinic Data Analysis Specialist Laboratory Supplementary data
31. Clusters can be… In Time e.g. cases of legionella In Place e.g. meningococcal cases in same school class In Person e.g. cases of breast cancer in a family The term cluster denotes the suspicion of an increased frequency of some event occurring, not that any increase has been demonstrated
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34. Figure. Measles cases by date of onset of rash. Region of Madrid, March 2006. (Cases reported until 16th March, 2006) Example of propagated outbreak (see www.eurosurveillance.org/ew/2006/060330.asp)