Highly Pathogenic Avian Influenza
There are two types of virus:
- Highly Pathogenic Avian Influenza (HPAI): Virus strains are extremely infectious, often fatal to domestic poultry and can spread rapidly from flock to flock.
- Low Pathogenicity Avian Influenza (LPAI): Virus strains occur naturally in wild migratory waterfowl and shorebirds without causing illness. LPAI can infect domestic poultry with little or no signs of illness.