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Scientists from the U.S. Geological Survey (USGS) in Madison, Wisc., confirmed today that five dead crows found in the St. Louis, Mo., area tested positive for the West Nile Virus. On Thursday, USGS biologists announced that a dead blue jay, found near El Dorado, Ark., also tested positive for the virus. These most recent cases mark the furthest west the virus has been identified in the U.S.