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What is the difference between a pandemic and an epidemic?

April 26, 2017epidemic Pandemic

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What is the difference between a pandemic and an epidemic?

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The main difference is the number of people infected and the area that is hit by a disease. An epidemic affects many people within a population, community or region at the same time. A pandemic affects an exceptionally high number of people worldwide at the same time.

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An influenza pandemic is a worldwide outbreak of disease that occurs when a new influenza virus appears or “emerges” in the human population, causing serious illness and then spreads easily form person-to-person worldwide. An influenza epidemic is a widespread outbreak usually caused by seasonal human influenza viruses. The current outbreak of H1N1 flu in Mexico is unusual, but at this time it would be considered an epidemic involving a new influenza strain, not a pandemic.