Pandemics are caused by a disease that affects people globally.
Pandemics are caused by diseases and viruses that spread from country to country and state to state infecting millions of people.
A pandemic is when a disease affects the global population.
Pandemics are usually caused by new infectious agents (bacteria or viruses) that spread quickly.
A pandemic is a type of epidemic, however a pandemic involves the number of people and the geographical area that the disease affects.
Pandemics are also known as a global epidemic.
A pandemic is an epidemic of an infectious disease that has spread across a large region, for instance multiple continents or worldwide, affecting a substantial number of individuals.
A widespread endemic disease with a stable number of infected individuals is not a pandemic.
Widespread endemic diseases with a stable number of infected individuals such as recurrences of seasonal influenza are generally excluded as they occur simultaneously in large regions of the globe rather than being spread worldwide.
Throughout human history, there have been a number of pandemics of diseases such as smallpox.
The most fatal pandemic in recorded history was the Black Death (also known as The Plague), which killed an estimated 75–200 million people in the 14th century
The term was not used yet but was for later pandemics including the 1918 influenza pandemic (Spanish flu).
Recent pandemics include tuberculosis, Russian flu, Spanish flu, Asian flu, cholera, Hong Kong flu, HIV/AIDS and COVID-19.