What is an epidemic?

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Multiple Choice

What is an epidemic?

Explanation:
An epidemic is a sudden, noticeable increase in the number of disease cases in a population over a short period, relative to what is normally expected. The key is the rapid rise in incidence within a defined time frame, not how common the disease is overall or whether it affects only animals. It can be regional or spread to multiple areas, and if it crosses continents, it may become a pandemic. So the description of many people being affected quickly best captures the concept. The other ideas describe rarity, continuous presence, or animal-only cases, which don’t fit the term.

An epidemic is a sudden, noticeable increase in the number of disease cases in a population over a short period, relative to what is normally expected. The key is the rapid rise in incidence within a defined time frame, not how common the disease is overall or whether it affects only animals. It can be regional or spread to multiple areas, and if it crosses continents, it may become a pandemic. So the description of many people being affected quickly best captures the concept. The other ideas describe rarity, continuous presence, or animal-only cases, which don’t fit the term.

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