Could a healthy flock of migrating Canadian geese be the source of a poultry flock's highly pathogenic avian influenza infection?

• A. No
• B. Not sure
• C. Not applicable
• D. Yes

Answer: (D)

Wild migratory waterfowl can carry avian influenza viruses and shed them into the environment even when they look healthy. A healthy-looking flock of migrating Canadian geese can introduce the virus to a poultry flock through direct contact, contaminated water or feed, or shared equipment, clothing, or vehicles. In wild birds, especially waterfowl, the virus can be present without obvious illness, so transmission to domestic poultry is a real risk. Once the virus reaches a poultry flock, highly pathogenic strains can spread rapidly and cause severe disease. So yes—healthy migrating geese can be a source of HPAI for poultry.