Outbreak: Incidence of new cases beyond the usual frequency of disease in a population or community in a given time**

10 Steps in Outbreak Investigation

Analysis:

• Notice: incidence raising
  • What are the control measures?
  • How good is our PH Surveillance system?
    • Are just detecting more cases?
    • Did we switch from passive to active surveillance?
    • Are we missing people - is the situation worse?
    • Who are the groups being infected now?
• Epidemic Triad → what aspect can be removed to control transmission
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