Epidemic is defined as an unexpectedly large number of cases of an illness, specific health-related behavior, or event in a particular population.

• A. True
• B. False
• C. A single case
• D. A recurring seasonal pattern

Answer: (A)

An epidemic happens when the number of cases in a population over a certain time is higher than what would be expected based on the usual background levels. The statement matches this idea by describing an unexpectedly large number of cases of an illness, or other health-related events, in a defined population. It isn’t about any single case or about regular, predictable patterns. A single case is not an epidemic, and a recurring seasonal pattern is a normal fluctuation that, by itself, is not considered an epidemic unless the rise exceeds the expected baseline. In short, an epidemic is a surge above the expected level in a defined population and time.