Queensland Confirms First H5N1 Bird Flu Case in Migratory Seabird

Queensland has become Australia's fourth state to confirm a case of H5N1 bird flu, after a migratory seabird tested positive for the highly pathogenic virus. The discovery was announced by authorities on Saturday.

This marks the first detection of the virus in Queensland, a wilderness area on Moreton Island, approximately 40 km from the state capital Brisbane. The infected bird was a dead petrel found by park rangers. So far, eighteen infections have been confirmed across the four Australian states that have reported cases.

Authorities emphasized that there have been no detections in poultry within Queensland and no evidence of large-scale animal deaths. They reiterated that the risk to human health remains low. Australia confirmed its first mainland case of H5N1 in June, after the disease had been detected in late 2025 on the sub-Antarctic territory of Heard Island.

The virulent strain of bird flu has been spreading through wild bird and mammal populations globally since 2021. It has led to the deaths of millions of birds, infected poultry and dairy farms, and resulted in some human infections among farmworkers.

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There remain no detections in poultry, nor evidence of large-scale deaths in any animals in Queensland.