When influenza occurs in unusually large in numbers over the specific area it is called a/an epidemic
An epidemic in influenza is most different from that dreaded of pandemic that scientists and the world health officials fear is the nigh. We might see an epidemic of the seasonal influenza and during any given year. In fact, we just had that one.
Flu reached the epidemic levels in the U.S. and for the 10 weeks in a row during the 2004-2005 seasons 5, 8.9% of all the deaths reported in the 122 U.S. cities were due to the influenza and the pneumonia (a common complication of the flu).
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