Higgins Poultry Farm operates strict biosecurity, with disinfecting stations for trucks and workers before entering the bird sheds. Photo / Erin SmithHiggins Poultry Farm operates strict biosecurity, with disinfecting stations for trucks and workers before entering the bird sheds. Photo / Erin Smith

Bushy Park (Tarapuruhi) sanctuary manager Rosi Merz said she had hoped the H5N1 strain would never reach New Zealand.Bushy Park (Tarapuruhi) sanctuary manager Rosi Merz said she had hoped the H5N1 strain would never reach New Zealand.