Australian authorities have officially confirmed the country's first mass mortality event linked to the highly pathogenic H5N1 avian influenza. The outbreak, identified on Baudin Rocks off the coast of South Australia, involved a flock of greater crested terns. Aerial surveillance conducted over the weekend revealed 49 dead and 35 sick birds, marking a significant and concerning escalation in the spread of the virus within the continent's wildlife populations.
Testing performed at the CSIRO's Australian Centre for Disease Preparedness confirmed the presence of the H5N1 strain in the affected terns. Federal Environment Minister Murray Watt described the development as the beginning of a long and difficult journey for Australia's native wildlife. While the virus has now been detected in multiple states, including Western Australia, New South Wales, Victoria, and Queensland, this incident represents the first time a large-scale death event has been recorded.
Despite the rapid spread among wild seabirds, officials emphasize that there is currently no evidence of the virus impacting commercial poultry or livestock. The federal government has activated a national management plan and committed an additional 24 million Australian dollars to bolster surveillance and response efforts. Agriculture Minister Julie Collins noted that while the situation is serious, the risk to human health remains low.
Authorities are urging the public to remain vigilant and avoid contact with sick or dead wildlife. The government continues to monitor the situation closely, with state agencies coordinating on-the-ground responses to track the virus's movement. As the disease continues to circulate, experts warn that further mass mortality events among wild bird populations are likely to occur in the coming months.