Epidemiology module of practical skills for mbbs student

STEP 5: ANALYZE THE DATA TO:

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  ƒ Confirm the outbreak:
  

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  ƒ Is the number of cases reported greater than the number expected for this period? (e.g. threshold)
  
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  ƒ What proportion of cases fulfill the case definition?
  

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  ƒ Define the extent of the outbreak (time, place and person)
  
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  ƒ Measure the severity of the outbreak. What proportion of confirmed cases were
  

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  ƒ hospitalized,
  
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  ƒ suffered complications or
  
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  ƒ died (Case Fatality Rate)
  

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  ƒ Measure the effectiveness of vaccination
  

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  ƒ How many confirmed cases occurred in vaccinated individuals and in unvaccinated individuals?
  
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  ƒ How effective was the vaccine at preventing infection (Vaccine Efficacy)