Atlantic Salmon Show Possible Longtime Exposure to Virus

US - Atlantic salmon in two New England rivers may have been exposed to a salmon virus as early as 1995, according to scientists with the U.S. Fish and Wildlife Service and the U.S. Geological Survey. The first indication of infectious salmon anemia virus in sea-run fish in this country was previously thought to be in 2001 when viral material was found in a Penobscot River salmon in Maine. The same year, the state of Maine reported the first confirmed case of ISAv in the United States in an aquaculture sea-pen salmon.