SYDNEY, June 19 (Parliament Politics Magazine) – Australia has identified its first suspected mainland case of H5N1 bird flu, marking a potential shift in the status of the last continent to remain free of the highly pathogenic virus. Authorities confirmed on Friday that a migratory brown skua discovered in Western Australia’s Cape Le Grand National Park tested positive for avian influenza.
State Agriculture Minister Jackie Jarvis announced that further testing is currently underway to confirm the specific strain.
“We are taking the suspected case of H5 bird flu seriously,” Jarvis said.
If the presence of the virus is confirmed, officials are prepared to launch a rapid and coordinated national response to contain the threat.
The H5N1 strain has caused significant damage to bird and mammal populations globally since 2021. While Australia successfully prevented the virus from reaching its mainland for years, the discovery has raised alarms regarding the potential impact on native wildlife. Wildlife veterinarian and associate professor at Adelaide University, Wayne Boardman, noted the vulnerability of local ecosystems.
Boardman highlighted that the virus poses a major risk to coastal raptors, endangered shorebirds, and the unique Australian sea lion population. In addition to the brown skua, a second bird a giant petrel found in the same remote area is currently undergoing testing for the virus. Definitive results regarding the suspected H5 infection are expected on Saturday.
The Australian government has been preparing for the possibility of an H5N1 arrival through extensive biosecurity efforts. Federal authorities have implemented strict protocols at poultry and dairy farms, vaccinated vulnerable species, and conducted emergency war-gaming exercises.
Australia previously detected H5 on Heard Island, a sub-Antarctic territory, in late 2025. With a $113 million preparation fund allocated, officials are coordinating across state and territory lines to manage the situation. The arrival of the virus via migratory seabirds reflects the global spread of the strain, which has already impacted millions of animals worldwide. Experts continue to monitor the situation closely as the country awaits final laboratory confirmation from the Australian Centre for Disease Preparedness.
