During a dengue outbreak, a nurse records the number of cases by village, age group and week of onset. What is the main epidemiological purpose of this information?
Correct answer: A. To describe disease distribution by person, place and time
- A. To describe disease distribution by person, place and time
- B. To prove that one treatment caused recovery
- C. To calculate the average height of the population
- D. To replace laboratory confirmation of every case
Explanation
Describing cases by person, place and time helps identify patterns, clusters and possible sources of infection. This descriptive step supports hypothesis formation but does not by itself prove causation or replace appropriate diagnosis.
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About Epidemiology and Biostatistics
Epidemiology examines the distribution and causes of disease by person, place and time, using measures such as incidence, prevalence, mortality and case-fatality rates. Biostatistics covers data presentation, sampling, averages, variability, probability and interpretation of study results, while distinguishing association from causation.
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