A disease is regularly present at its usual level in a particular district over many years. How is this pattern classified?
Correct answer: B. Endemic disease
- A. Sporadic disease
- B. Endemic disease
- C. Epidemic disease
- D. Pandemic disease
Explanation
An endemic disease remains continuously present at an expected level in a defined area. An epidemic is an occurrence above the expected level, while sporadic disease occurs only occasionally.
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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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