Description
Seasonality has a major effect on the spatial and temporal (i.e. spatiotemporal) dynamics of natural systems and their populations (1). Although the seasonality of influenza in temperate countries is widely recognized, inter-regional spread of influenza in the United States has not been well characterized.
Objective
To study the seasonality of influenza in the United States between 1972 and 2007 through the evaluation of the timing, velocity, and spatial spread of annual epidemic cycles.
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