Impact on Poultry Bird Flu Impact on Livestock H5N1 Virus Biosecurity Measures Disease Outbreaks Impact on Agriculture H5N1 Disease Spread Vaccination Bird Flu Outbreak Public Health Impact Biosecurity Food Safety Disease Control Human Health Risks Highly Pathogenic Avian Influenza Highly Pathogenic Avian Influenza (HPAI) H5N1 Strain Livestock Diseases Impact on Poultry Industry H5N1 Subtype Euthanisation Disease Management Poultry Diseases Human Health Public Health