Bacteria, Viruses, and Protists

Virus Basics

What is the difference between an epidemic and a pandemic?

An epidemic and a pandemic are different when it comes to viral outbreaks. The epidemics are usually confined to certain areas, such as a yearly statewide epidemic of flu during the winter months. A pandemic is much more widespread and includes affected people worldwide. For example, one of the most well-known pandemics was the worldwide influenza outbreak of 1918 in which 200 million cases of influenza were discovered, causing fifty million deaths.


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