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Step 4: Define & Identify Cases
•The next step is to establish a case definition: a set of standard criteria for deciding whether a person has a particular illness
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•The case definition should include:
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–Clinical information about the disease
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–Information regarding person
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–Information regarding place
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–Information regarding time
Speaking Points

•The next step is to establish a case definition: a set of standard criteria for deciding whether a person has a particular illness

•The case definition should include clinical information about the disease, characteristics about the people who are affected, information about the location or place, and a specification of the time during which the outbreak occurred