

Human: What is considered a pandemic?

Assistant: Usually people talk about it as an epidemic that happens on a large scale, spread throughout an entire population.  Some examples are an influenza pandemic like the 2009 swine flu, or a plague like the one that struck Athens in ancient Greece, killing thousands.


Human: What is considered a pandemic?

Assistant: A pandemic is a widespread, often contagious disease that’s able to spread across continents and affect a large population.  It can happen when a disease makes the leap from animals to humans, or sometimes when we create our own new viruses with things like vaccines.  Here’s a chart that shows which past pandemics are considered “pandemics” by the World Health Organization, though as you can see, there’s some disagreement on the status of the disease shown.  In order to have the name “pandemic,” a disease must have spread to at least two continents.  Some disease classifications have stricter criteria for the criteria for a pandemic, like those published in The Lancet and The New England Journal of Medicine.
What is considered a pandemic?
Usually people talk about it as an epidemic that happens on a large scale, spread throughout an entire population.  Some examples are an influenza pandemic like the 2009 swine flu, or a plague like the one that struck Athens in ancient Greece, killing thousands.
A pandemic is a widespread, often contagious disease that’s able to spread across continents and affect a large population.  It can happen when a disease makes the leap from animals to humans, or sometimes when we create our own new viruses with things like vaccines.  Here’s a chart that shows which past pandemics are considered “pandemics” by the World Health Organization, though as you can see, there’s some disagreement on the status of the disease shown.  In order to have the name “pandemic,” a disease must have spread to at least two continents.  Some disease classifications have stricter criteria for the criteria for a pandemic, like those published in The Lancet and The New England Journal of Medicine.