an epidemic that is geographically widespread; occurring throughout a region or even throughout the world
epidemic over a wide geographical area;
"a pandemic outbreak of malaria"
"pandemic fear of nuclear war"
- The risk of pandemic influenza is serious.
- Vaccines effective against a pandemic virus are not yet available.
- The flu was arrested before it became a pandemic.
- The bird flu pandemic is well controlled.
If..enough people aren't protected..it could spread to pandemic proportions.出自：National Observer (US)