Epidemiology

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1. What is incidence?

  • The amount of bacteria present in one individual
  • No. of new events occurring in a defined population during a specified period of time
  • the cumulative incidence of infection in a population observed over a period of time during an epidemic
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2. What is latency/latent period?

  • time taken for disease to enter body
  • the delay between exposure and disease , the period of initiation of infection to its detection
  • time between first contact with an infectious agent and the appearance of the first disease symptom

3. What is aetiology?

  • postulated cause of disease specifically those that utilise pathogenic medium
  • agent responsible for the postulated cause of a disease
  • time between first contact with an infectious agent and the appearance of the first disease symptom

4. Epidemiology today is largely directed at...?

  • Chronic disease
  • Acute diseases
  • Incurable diseases

5. What is an experimental study?

  • any designated group individuals who are followed or traced over time
  • a study in which conditions are in direct control of the investigator
  • the study of diseases for which medical care is sought

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