SYDNEY: Queensland became Australia’s fourth state to confirm a case of H5N1 bird flu after authorities said on Saturday that a migratory seabird tested positive for the highly pathogenic virus. Australia was the final continent to confirm a mainland case of H5N1 when the disease arrived in June, although it had been detected in late 2025 on the sub-Antarctic territory of Heard Island, about 4,100 km (2,600 miles) from continental Australia.

If confirmed, it will bring Australia's total H5 bird flu case tally to 18.

SYDNEY: Queensland became Australia’s fourth state to confirm a case of H5N1 bird flu after authorities said on Saturday that a migratory seabird tested positive for the highly…