Australia issued a warning on Monday regarding the potential for a wider spread of H5N1 avian flu following the first mass mortality event among seabirds that resulted in the death of approximately 50 greater crested terns near the coast south of Adelaide. Despite this incident, there is currently no evidence of the virus affecting Australian farms, many of which have implemented strict measures to protect their poultry flocks since the initial detection in June.
The country’s Agriculture Minister, Julie Collins, confirmed the presence of H5N1 avian flu in a group of 49 deceased and 35 sick terns discovered through aerial surveillance near Cape Jaffa, 250 kilometers away from Adelaide, on Friday. Collins stated that Australians should anticipate a rise in the spread of the virus, leading to a larger number of wildlife casualties. She highlighted that this episode marks the first verified case of mass mortality due to H5N1 flu in Australia and emphasized the inevitability of significant losses once the virus starts circulating among wildlife.
Collins revealed that Australia has recorded a total of 74 confirmed cases, with occurrences reported across states such as Western Australia and Queensland, although the majority of cases have been concentrated in South Australia. Both Australia and New Zealand have been preparing for the virus for years, implementing stringent biosecurity measures on farms, conducting tests on shorebirds, vaccinating vulnerable species, and rehearsing response strategies.
In recent years, the H5N1 avian flu has caused extensive harm, resulting in the deaths of hundreds of millions of birds and mammals and substantial financial losses for poultry farmers. The virus has even infected cattle in the United States and led to the accumulation of bird and seal carcasses on beaches. While H5N1 bird flu can be transmitted to humans through contact with infected animals, global instances of human infection remain limited, with health authorities asserting that the risk to humans is currently low.
