Australia Reports Second H5N1 Bird Flu Case in Wild Seabirds

Australia has confirmed a second case of highly pathogenic H5N1 avian influenza in Western Australia, following an earlier detection over the weekend, according to government officials.

The latest case was identified in a northern giant petrel, a migratory seabird found sick on a remote beach near Esperance, approximately 570 kilometres southeast of Perth. A brown skua tested positive in the earlier confirmed case.

Government Response and Biosecurity Measures

Australia’s Agriculture Minister Julie Collins said authorities are working closely with the poultry industry to strengthen biosecurity measures and reduce the risk of the virus spreading to commercial farming operations.

Officials emphasized ongoing monitoring, testing of wild birds, and preventive steps aimed at protecting poultry production systems from infection.

Impact on Poultry Industry

Poultry producer Inghams announced it would implement precautionary lockdown measures across its farms and processing facilities in Western Australia.

The company stated that, so far, there has been no detection of H5N1 in its commercial poultry operations or supply chain.

Background on H5N1

Highly pathogenic avian influenza (H5N1) has affected bird populations globally in recent years, leading to disruptions in poultry supply chains and increased food security concerns in several countries.

Human infections remain rare, but authorities worldwide continue to monitor the virus closely due to its potential impact on wildlife and agriculture.

Australia had previously remained free of mainland H5N1 cases until recent detections, although the virus was identified in late 2025 on the sub-Antarctic territory of Heard Island.

Officials say surveillance and containment efforts will continue as part of a broader strategy to manage the spread of avian influenza.