Southwestern Pacific outpost, Tasmanian territory with a protected reserve status
Australia has recorded H5N1 avian influenza in migratory seabirds on the mainland and in sub‑Antarctic territories. Authorities have confirmed cases in Western Australia and South Australia and are testing further suspected detections in New South Wales. Surveillance, farm biosecurity and public reporting have increased while officials say there is no evidence the virus has reached poultry or caused mass mortalities on the mainland.