In June 2009, the State of Virginia issued a fire ant quarantine for 11 localities in Virginia. Read more about it at Virginia Fire Ant Quarantine. Update January 2011. Press release is no longer available. Link goes to Fire Ant site at same domain.
See the following for more information on imported fire ants in Virginia:
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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.