Sounds like more of a threat to commercial poultry operations and not humans-- but interesting for sure. No mention of impact on the waterfowl.
Both US viruses were detected because of increased surveillance prompted by the Canadian H5N2 outbreaks. The USDA said neither virus has been found in any poultry in the United States.
In a "stakeholder announcement," the USDA said, "There is no immediate public health concern with either of these avian influenza viruses. Both H5N2 and H5N8 viruses have been found in other parts of the world and have not caused any human infection to date."