Australia was the last continent to have not had H5 bird flu
Australia has reached the end of a long and singular exemption — the last continent to encounter H5 bird flu now faces its first suspected cases, carried ashore by migratory giant petrels in New South Wales and Western Australia. The birds, wayfarers from distant oceans, arrived unwell and have since become the focus of urgent scientific scrutiny, as authorities await confirmation of whether the most dangerous strain of the virus has finally found its way to Australian shores. Governments and veterinary agencies, who have spent years preparing for this moment, move now with measured urgency — expanding surveillance, alerting industries, and reminding a watchful public that preparedness, not panic, is the appropriate response.
- Australia's last-continent status has ended: two dead giant petrels, one near Hawks Nest in NSW and one near Mullaloo in WA, have returned preliminary positive results for H5 bird flu.
- The critical unknown — whether these birds carry the highly pathogenic strain — hangs over the nation as samples race to CSIRO's national laboratory, with results expected within a day.
- Authorities are scaling up fast: beach patrols along WA's metropolitan coast are intensifying, wetland surveillance is expanding, and the public is being asked to report sick or dead birds without touching them.
- The poultry industry has been put on alert, though no spread to commercial operations or broader wild bird populations has been detected — the next feared threshold is transmission into local wildlife.
- Human risk remains low, officials stress, with no evidence of person-to-person transmission and a vaccine already in existence, even as the world watches whether Australia's years of preparation will hold.
Australia has recorded its first suspected H5 bird flu cases, ending the continent's long status as the last place on Earth untouched by a virus that has caused devastating losses in poultry and wild animal populations worldwide. A giant petrel found ill near Hawks Nest on the NSW Mid North Coast tested positive in preliminary screening, as did a dead giant petrel discovered near Mullaloo, north of Perth in Western Australia. Both are migratory seabirds that had travelled from distant parts of the globe. Samples from each have been sent to CSIRO's national laboratory in Geelong to determine whether they carry the high pathogenicity strain — the most dangerous variant — with results expected within a day.
NSW Agricultural Minister Tara Moriarty acknowledged the uncertainty, noting that the severity of the strain was not yet known. The discovery follows Australia's first confirmed H5 case last month — a brown skua found on a WA beach — with five further confirmed cases since then across WA and South Australia. The H5N1 2.3.4.4b strain has swept the world through migratory bird movement, affecting more than fifty mammal species and countless bird populations.
Authorities have responded swiftly. WA Agriculture Minister Jackie Jarvis announced increased beach patrols and expanded wetland testing. NSW urged the public to report unusual bird deaths via the Emergency Animal Disease hotline and to avoid contact with sick or dead birds. Chief Veterinary Officer Jo Coombe outlined warning signs — lethargy, respiratory distress, and neurological symptoms — and noted that staff across multiple agencies had been trained for this scenario since an H7 outbreak two years ago.
The poultry industry has been notified, and officials confirmed no spread to commercial operations. Moriarty urged the public to keep buying eggs and chicken, emphasising there was no threat to food supply. Human health risk remains very low, with no evidence of person-to-person transmission and a vaccine available for rare and endangered species. The next critical concern, Coombe said, is whether the virus moves from these vagrant migratory birds into local wild bird populations — a threshold that, for now, has not been crossed.
Australia has found its first suspected cases of H5 bird flu, marking the end of the continent's long exemption from a virus that has ravaged poultry and marine mammals across the globe. On the NSW Mid North Coast near Hawks Nest, a giant petrel discovered by a member of the public showed signs of illness and tested positive for H5 in preliminary screening. Simultaneously, Western Australia confirmed a suspected case in another dead giant petrel found near Mullaloo, north of Perth. Both birds are migratory species that had flown in from distant parts of the world. Samples from each have been sent to the CSIRO for definitive testing to determine whether they carry the high pathogenicity strain of the virus—the most dangerous variant.
NSW Agricultural Minister Tara Moriarty acknowledged the uncertainty surrounding the severity of what has been detected. "We don't know yet if it is the worst strain of the virus," she said, noting that the bird near Hawks Nest had been assessed by veterinarians and tested at an agricultural institute in Sydney's Camden before samples were dispatched to the national testing laboratory in Geelong. Results were expected within a day. This represents the first wild migratory seabird in New South Wales to return a suspected positive result, a threshold the state had managed to avoid until now.
The discovery arrives after Australia's long run as the final continent without confirmed H5 bird flu. The first confirmed case in the country came last month when a brown skua was identified at Cape Le Grand beach in Western Australia. Since then, four more cases have been confirmed in WA and one in South Australia. The H5N1 2.3.4.4b strain has spread rapidly across the world through the movement of wild birds, causing mass die-offs in poultry operations and devastating wild marine mammal populations. More than fifty species of mammals have been affected globally, alongside numerous bird species.
Authorities have moved quickly to expand surveillance. WA Agriculture Minister Jackie Jarvis announced that fisheries officers would increase beach patrols along the metropolitan coast, and testing in wetlands where waterfowl congregate would be stepped up. NSW has urged the public to report any unusual bird deaths or illness by calling the Emergency Animal Disease hotline at 1800 675 888, and to avoid direct contact with sick or dead birds while documenting observations with photos or video. NSW Chief Veterinary Officer Jo Coombe outlined the signs to watch for: lethargy, respiratory symptoms such as watery eyes or labored breathing, and neurological signs including paralysis or difficulty walking.
The government has been preparing for this scenario for years. Coombe noted that since an H7 bird flu outbreak two years ago, staff across multiple agencies have been trained and readied for the arrival of H5. "Australia was the last continent to have not had H5 bird flu, so we've trained up many, many members of staff," she said. The poultry industry has been notified, and authorities report no evidence of spread to commercial operations. Moriarty reassured the public that there was no cause for alarm regarding food supply. "There are no other birds that have been found to be positive of H5 at the moment, but we are now increasing our surveillance," she said. "Keep buying eggs, keep buying chicken."
The human health risk remains low, officials emphasized. While the virus can theoretically infect people, cases would present with common cold symptoms, and there is no evidence of human-to-human transmission. A vaccine exists for the H5 strain, though it is currently available only for rare and endangered species. The next critical threshold, according to Coombe, would be transmission from these vagrant migratory birds into the broader wild bird population. So far, there have been no reports of the mass mortality events that have characterized H5 outbreaks elsewhere in the world. Giant petrels, she noted, typically make landfall only when they are unwell, which may limit their contact with other wildlife. The coming weeks will determine whether Australia's preparedness holds or whether the virus begins to establish itself in local bird populations.
Notable Quotes
We don't know yet if it is the worst strain of the virus.— NSW Agricultural Minister Tara Moriarty
Australia was the last continent to have not had H5 bird flu, so we've trained up many, many members of staff.— NSW Chief Veterinary Officer Jo Coombe
The Hearth Conversation Another angle on the story
Why does it matter that Australia was the last continent without this virus?
Because it meant the country had time to prepare without the immediate pressure of an active outbreak. That preparation—the training, the protocols, the surveillance networks—is now being tested in real time.
The giant petrels came from "other parts of the world." How does a bird carry a virus that far?
Migratory birds travel thousands of kilometers following food and breeding cycles. The virus travels with them. It's why H5 spread so quickly globally—the birds don't know they're infected, and they don't stop at borders.
If there's a vaccine, why isn't it being used more widely?
The vaccine exists, but it's complex to deploy at scale and currently reserved for species we're actively trying to save from extinction. For wild populations, the strategy is surveillance and containment, not vaccination.
What's the real risk here—to people, to farms, to wildlife?
To people, it's minimal. To farms, it depends on whether the virus jumps from these wild birds into poultry flocks—that's where the economic and food security threat lives. To wildlife, it's the unknown: we don't yet know if this will spread through Australia's wild bird populations the way it has elsewhere.
Why tell people to keep buying chicken if there's a risk?
Because right now there is no risk to the poultry industry. The government is being clear about that distinction—this is a wild bird problem at this moment, not a farm problem. Panic would be premature and economically damaging.