Bird flu has infected a dairy herd in Ohio for the first time and was detected in additional herds in Kansas and New Mexico, according to the U.S. government, expanding an outbreak in cows that has raised concerns about possible risks to humans.
Virus has spread to new regions, infected cats, tigers, bears, seals and other animals
Migrating birds like ducks and geese a likely vector for the disease
U.S. officials say threat to the public is low; cows don't appear to spread infection within herd
NDSU advises keeping livestock separate from potentially-infected poultry
USDA plans to discuss poultry vaccinations with trading partners amid trade restriction concerns
Severe bird flu detected among Antarctic wild birds and mammals for first time