AUSTRALIAN pork producers remain on alert following confirmation last week the deadly virus African swine fever (ASF) has caused the death of hundreds of pigs in Papua New Guinea.
PNG officials, who confirmed that samples from the affected Southern Highlands pigs were sent to Australia and returned positive for ASF, are investigating how the virus spread to the region, including the possibility of transmission via imported canned food.
Australian Pork Ltd chief executive officer Margo Andrae said the detection of ASF in PNG reinforced the importance of the ongoing mitigation work between the pork industry, government and other stakeholders.
"While ASF does not pose human health risks, the deadly virus would absolutely devastate Australia's pork industry if it arrived here," Ms Andrae said.
"The potential national economic impact from an ASF incursion in Australia is estimated to be more than $2 billion.
"There is no cure for ASF and millions of Australian pigs would be at risk if the disease reached our country.
"That would devastate pork producers and Australian fresh pork supplies and seriously jeopardise the wellbeing of the 36,000 Australians employed in our industry."
Ms Andrae said ASF represented potentially the biggest animal disease event the world had ever seen, having already killed hundreds of millions of pigs across Asia and Europe.
"ASF is now confirmed in PNG, Indonesia and Timor Leste and we're concerned about its potential spread to the Pacific region," she said.
"This battle is being fought across international borders and we welcome the Federal government's offer this week to assist PNG to contain the virus," Ms Andrae said.
"Even with current travel restrictions, there's no room for complacency in terms of ASF, especially given international postal services remain operational.
"That's why the installation of two new 3D x-ray machines at the Sydney and Melbourne mail centres, as part of the Federal government's $66.6 million ASF-response package, is such an important part of our defence.
"Biosecurity measures in the Torres Strait have been strengthened as a result of COVID-19 and the government is further reviewing those measures to reflect the risk ASF in PNG poses to Australia."
Confirmation of ASF in PNG coincides with the Inspector-General of Biosecurity's release last week of the updated report on the adequacy of preventative border measures to mitigate the risk of ASF.
"A timely recommendation in the report is the inclusion of additional criteria in risk assessment for flights from ASF-affected countries, including a focus on seasonal farm workers," Ms Andrae said.
"We can't afford any weak links in our defence against ASF.
"All aspects of monitoring at the border are critical, but so is the work by producers to strengthen on-farm biosecurity and the cross-agency collaboration being led by national feral pig management co-ordinator, Dr Heather Channon."
Biosecurity inspector general Rob Delane said since the first outbreak of ASF in China in August 2018, it has been reported in 10 other countries in Asia.
"The ASF risk is likely to remain for some years, due to the direct and hub transit airline connections and mail and airfreight routes from these countries to Australia," Mr Delane said.
"This will put increasing pressure on Australia's biosecurity defences."
There was also work to be done by the industry itself with "approved arrangement" holders failing 24 audits conducted by the department.
"Between 2017 and 2019, the department conducted 269 audits on temperature-controlled storage of imported pig meat, temporary storage of contained refrigerated pig meat and imported pig meat processing approved arrangements," Mr Delane said.
"It found a high level of non-compliance, including 24 failed (8.9pc), 17 critical and 158 major non-compliances."
As of July 2019, 27 imported pig meat processing approved arrangement facilities were operating in Australia - with New South Wales (7), Victoria (11), Queensland (4), South Australia (3) and Western Australia (2).
Mr Delane said biosecurity protocols for uncooked imported pig meat were rigorous and imports were only permitted from countries free of ASF.
"The IGB considers that the department appears to be satisfactorily managing the commercially imported pig meat consignments that use swine-specific tariff codes," Mr Delane said.
"However, pig meat imported using tariff codes that are not swine-specific have a higher rate of non-compliance - resulting in re-export or destruction of those consignments."
The report said China has about half the world's pig population and has lost about 38.7pc of their pig herd to ASF.
It has been estimated that about a quarter of the world's pigs have been eliminated due to ASF.