Epidemic , pandemic , endemic .
Epidemic - think of an epidemic as the start of something—whether a disease or a trend—spreading rapidly within a community or region.
Pandemic - whereas a pandemic is what an epidemic becomes once it reaches a far wider swath of people, especially across continents or the entire world.
If something is spreading like wildfire, it’s an epidemic. If something has already spread like wildfire and is currently massive in its reach and impact, it’s a pandemic.
Due to its worldwide reach, a pandemic can lead to a disease becoming endemic (as opposed to being largely contained through the use of vaccines, for example).
It’s not eradicated but confined to a particular region , population etc..
Endemic is an adjective that means natural to, native to, confined to, or widespread within a place or population of people.
here’s another example of each in a sentence.
- The city had to close schools to contain a measles epidemic.
- Although it isn’t exactly known where the disease first originated, the 1918 Spanish flu pandemic is estimated to have affected one-third of people across the entire globe.
- Polio is endemic in a few countries where its spread has not been contained.
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