Answer:
Not all infectious disease terms are created equal, though often they’re mistakenly used interchangeably. The distinction between the words “pandemic,” “epidemic,” and “endemic” is regularly blurred, even by medical experts. This is because the definition of each term is fluid and changes as diseases become more or less prevalent over time.
While conversational use of these words might not require precise definitions, knowing the difference is important to help you better understand public health news and appropriate public health responses.
Let’s start with basic definitions:
AN EPIDEMIC is a disease that affects a large number of people within a community, population, or region.
A PANDEMIC is an epidemic that’s spread over multiple countries or continents.
ENDEMIC is something that belongs to a particular people or country.
AN OUTBREAK is a greater-than-anticipated increase in the number of endemic cases. It can also be a single case in a new area. If it’s not quickly controlled, an outbreak can become an epidemic.