Epidemiology

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1. The incubation period is the....

  • 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
  • time taken for disease to enter body
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2. What is aetiology?

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

3. What is attack rate ?

  • 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
  • The amount of bacteria present in one individual

4. What is incidence?

  • 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
  • The amount of bacteria present in one individual

5. A cohort study examines....

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