Australia Warns of Wider Bird Flu Threat After Mass Seabird Deaths

Australia is bracing for a wider impact of H5N1 bird flu after confirming its first mass mortality event among seabirds. Approximately 50 greater crested terns died off the coast south of Adelaide, signaling a new phase of the virus's spread in the country.

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Australians should expect to see more spread and larger numbers now of wildlife being affected.

Agriculture Minister Julie Collins issued a stark warning, stating, "Australians should expect to see more spread and larger numbers now of wildlife being affected." She confirmed that testing identified H5N1 bird flu in a group of dead and sick terns found during helicopter surveillance. "This is the first confirmed case of a mass mortality," Collins added, noting that once the virus spreads in wildlife, significant losses become unavoidable.

While the virus is actively circulating among wild birds, Australia has so far avoided its introduction to commercial farms. Many farms have implemented strict lockdown and biosecurity measures since the virus was first detected in June. The country and neighboring New Zealand have spent years preparing for H5N1, employing strategies like enhanced farm biosecurity, shore bird testing, vaccination of vulnerable species, and response plan simulations.

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This is the first confirmed case of a mass mortality.

The H5N1 virus has caused devastating losses globally in recent years, killing hundreds of millions of birds and mammals, resulting in billions of dollars in losses for poultry farmers, and even infecting cattle in the United States. Although H5N1 can infect humans through contact with infected animals, the risk to human health remains low, with a small number of cases reported worldwide.

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Once the bird flu is spreading in wildlife and the natural environment, it is not possible to avoid significant losses, which is what we're starting to see now.