After being detected for the very first time in two seabirds in Western Australia lower than per week in the past, the lethal H5N1 pressure of chook flu has additionally arrived in a second state – with a case confirmed in South Australia.
For people – particularly those that don’t come into shut contact with contaminated animals – the chance of getting sick is low. However Australia’s multibillion-dollar poultry sector is on excessive alert.
A extreme outbreak wouldn’t simply imply the potential deaths of tens of millions of birds (both from the virus itself or because of culls to comprise it). It might additionally result in export bans on Australian poultry merchandise and create big prices for producers to decontaminate affected farms, regardless of authorities help.
It’s vital to emphasize that at this stage, H5N1 has not been detected in any industrial poultry farms or native and endemic wild birds in Australia.
So, how are we getting ready to take care of a potential outbreak? And if one occurs, what might it imply on the checkout for the value of hen, eggs and different poultry merchandise?
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Chicken flu has unfold to 2 Australian states. Right here’s the way it might speed up our extinction disaster
Locking down
Across the nation, however particularly in WA and SA, the poultry business has already begun rising biosecurity measures as a precaution.
Inghams, for instance, Australia’s largest poultry producer, has locked down its operations in WA, blocking non-essential entry to farms.
Inghams can be in search of a “regional housing order” from the federal authorities’s chief veterinary officer, which might enable it to carry its free-range flocks indoors.
That’s as a result of at this stage, the business’s precedence is defending flocks from publicity to wild birds as a lot as potential.
These measures are on high of routine biosecurity measures for poultry farms, which usually embody:
- limiting who can go to farms
- not permitting employees to maintain yard chooks or different birds at house
- not permitting workers to work throughout totally different poultry services in a brief window of time
- strict management on the entrance of each farm, which can embody showering and utilization of an organization’s garments
- implementing measures to discourage wild birds and to regulate rodent and bug populations.
The H5N1 pressure is extremely deadly to chickens, in addition to turkeys and quail. Different birds grown commercially, akin to geese, can be contaminated, however are extra of a priority as a result of they are often “silent carriers” of the illness, typically in a position to unfold it with out signs.
Have we been right here earlier than?
Australia has by no means had an outbreak of this H5N1 pressure of chook flu, which first emerged in Asia about three many years in the past. Till this month, we had famously been the final continent on Earth deemed freed from the virus.
However Australia has efficiently handled outbreaks of different chook flu strains up to now, which on the time dampened manufacturing of hen meat and eggs.
Most just lately, from mid-2024 by to early 2025, poultry farms in Victoria, New South Wales and the Australian Capital Territory confronted an outbreak of a number of strains of the H7-type chook flu. The principle distinction with H5 is that these H7 variants have by no means been linked to mass wild chook deaths or mammalian circumstances, together with individuals.
H7 was declared efficiently eradicated in July 2025. However this achievement required the culling of greater than 10% of Australia’s egg-laying hen flock or some 2.4 million birds. Manufacturing fell and egg costs rose sharply.
Jono Searle/AAP
Classes from the US
The playbook for coping with H5N1 could be very comparable. However the stakes and uncertainties are larger, as a result of this pressure is deadlier and may infect a broader vary of animals (and due to this fact unfold extra simply).
It’s no assure of what would occur right here, however seeking to america offers an illustration of how devastating an H5N1 outbreak could be.
Since 2022, the US has been coping with a extreme outbreak of extremely pathogenic avian influenza. Greater than 200 million birds have died, both from the illness itself or because of being culled.
What about vaccination?
Australia’s industrial hen flocks are routinely vaccinated for a variety of widespread ailments. And a vaccine exists for the H5N1 pressure of chook flu.
So, you is perhaps shocked to be taught that not solely are Australia’s industrial flocks not vaccinated for chook flu, however this vaccine isn’t permitted to be used in Australia besides in very restricted circumstances.
The principle cause for that is that Australia has sought to take care of our “free with out vaccination” standing for chook flu, which permits us to export poultry merchandise freely wherever on the planet.
If there was a serious outbreak in Australia, that means no nation’s poultry business could possibly be declared freed from the virus, the enterprise case for utilizing the vaccine would probably change.
No must panic
Proper now, it’s affordable for Australia’s poultry farmers to be extremely vigilant. However we shouldn’t get carried away and panic.
As a shopper, it stays suitable for eating poultry meat and eggs in case you’ve dealt with and cooked them correctly. If there stay no confirmed circumstances but in industrial services, there might be no affect on the provision or costs of egg and poultry meat.
Australian authorities have had a very long time to arrange for a potential outbreak and develop plans which at the moment are being put into place. This included “Train Volare” in 2024, which introduced collectively authorities departments and senior business leaders to plan for various potential eventualities of an outbreak of this virus.
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Chicken flu has unfold to 2 Australian states. Right here’s the way it might speed up our extinction disaster
