Nokea
First step of epidemic investigation?
- A. Preparing case definition
- B. Mapping the epidemic
- C. Confirmation
- D. Searching for the cases
Correct Answer: C
Rationale: The first step in investigating an epidemic is to confirm the existence of the outbreak through verification of cases.
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Nature of common sources epidemic
- A. explosive
- B. slow
- C. static
- D. all
Correct Answer: A
Rationale: Common-source epidemics tend to have explosive patterns with sharp increases in cases.
Which of the following is the strength of Case control study?
- A. rare disease
- B. bias can be minimized
- C. temporal relationship can be established
- D. relative risk can be calculated
Correct Answer: A
Rationale: Case-control studies are particularly useful for studying rare diseases.
CDM stands for-
- A. clean development mechanism
- B. community development mechanism
- C. clear development model
- D. none
Correct Answer: A
Rationale: Clean Development Mechanism (CDM) is a part of the Kyoto Protocol aimed at reducing emissions.
What is the prevalence of disease during July?
- A. 3 / 700
- B. 4 / 700
- C. 5 / 700
- D. 8 / 700
Correct Answer: C
Rationale: Prevalence includes all cases present at a given time.
For the cruise ship scenario, if you suspected ice as a transmission source, how might you display 'place'?
- A. Spot map by assigned dinner seating location
- B. Spot map by cabin
- C. Shaded map of United States by state of residence
- D. Shaded map by whether passenger consumed ship's ice or not
Correct Answer: D
Rationale: Mapping by exposure to ice helps identify potential sources of infection.