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.
https://intermountainhealthcare.org/blogs/topics/live-well/2020/04/whats-the-difference-between-a-pandemic-an-epidemic-endemic-and-an-outbreak/