Know Your Demics

I recently came across a reference to "an epidemic of pandemic flu." Pandemic flu looks like avian flu and Spanish flu, but it refers to the prevalence of the disease, not the type of the disease. There could be an epidemic of flu, and if it spread far enough it would be a pandemic of flu.

Webster's New World on pandemic:

adj.
over a whole area, country, etc.; universal; general; specif., epidemic over a large region: said of a disease
n.
a pandemic disease