USDA and the Department of the Interior say they've discovered the presence of H5 and N1 avian influenza subtypes in two Michigan wild swans. Tests results indicate it's not the highly pathogenic H5N1 strain, however, and doesn't pose a risk to human health. Meanwhile, Korea announced it was suspending imports of U.S. poultry products.
-- P. Scott Shearer, Washington, D.C., correspondent