Bird Flu Cases Hit 215 Across Australia as Virus Spreads Inland

Australia has confirmed 215 cases of H5N1 bird flu as of August 9, 2026, with the virus now spreading inland and infecting native bird species for the first time. Two greater crested terns tested positive in New South Wales on August 8, marking the state’s first detection in Australian natives. The outbreak spans South Australia (147 cases), Victoria (53 cases), Western Australia (10 cases), NSW (4 cases), and Queensland (1 case). Experts warn the disease will spread across the continent within a year, threatening nearly 400 bird and mammal species at high risk.

How the virus reached inland Australia

The first inland case of H5N1 was detected near Wentworth in far western NSW, at the junction of the Murray and Darling rivers on the Victorian border, about 400 kilometres from the nearest coast. The virus arrived in Australia in June via seabirds blown off course from the sub-Antarctic flyway. Previous detections had been confined to coastal areas, but the inland spread signals rapid continental transmission.

Native birds now infected as outbreak accelerates

NSW recorded its first H5N1 cases in Australian native birds on August 8, 2026. Two dead greater crested terns were found by members of the public in Narooma on the South Coast and near Wentworth. NSW Environment Minister Penny Sharpe said the cases were not unexpected and that the state remains well-equipped to respond. Victoria recorded 10 new cases on August 8, bringing its total to 53.

Nearly 400 species face high or extreme risk

The federal government’s analysis released this week identified almost 400 bird and mammal species at high, very high, or extreme risk if infected. Prof John Woinarski of Charles Darwin University expects the disease will spread across the continent within a year. Australian sea lions, with only 12,000 or fewer individuals remaining and restricted to South Australia and Western Australia, face potential extinction if the virus reaches their colonies, according to Dr Holly Raudino of the WA Department of Biodiversity Conservation and Attractions.

Government and state responses mobilise resources

Victoria announced a $500,000 funding package on August 9 to support wildlife volunteers and rescuers. The package includes $250,000 for frontline wildlife rescuers and shelters and $250,000 for Wildlife Victoria to provide PPE, testing support, and emergency response services. NSW and Victoria have deployed ground teams, aerial surveillance, and mobile diagnostic vans. The state government said surveillance will continue in affected areas to ensure early detection of further cases.

Final Thoughts

With 215 confirmed cases spreading inland and into native species, Australia faces a critical window to protect endangered wildlife. Governments have mobilised funding and surveillance, but experts warn mass mortality events are likely within months if the virus reaches vulnerable colonies.

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