Ahead of the NSW state election on 25 March 2023, the NSW Government caretaker period has commenced. Limited updates will be made to this website during this period.
White Spot was detected at a prawn farm in northern NSW on 12 February 2023 and was quickly confirmed by NSW Department of Primary Industries (DPI) and Australian Centre for Disease Preparedness (ACDP) through diagnostic testing.
A NSW DPI emergency response Incident Management Team is working to determine the source of the outbreak and to complete surveillance activities.
On 25 February 2023, white spot was detected in a second prawn farm in northern NSW.
NSW DPI is working with the farms to contain and eradicate White Spot on-farm. NSW DPI is ensuring the farms manage the detections with appropriate biosecurity measures in place to continue to minimise risk of spread. Eradication activities, including accelerated harvesting and destruction, have been completed on both farms.
A short-term control order under the NSW Biosecurity Act 2015 was issued on Thursday 16 February 2023 to restrict the movement of raw, uncooked decapod crustaceans from the Clarence Estuary while containment, source detection and surveillance activities are underway.
As of 1 March 2023, this Control Order (PDF, 276.62 KB) has been extended until 29 March 2023, following two confirmations of White Spot and the need to continue wild crustacean surveillance. The extended control order allows the team to gather more evidence to help determine the significance of previous results, provide critical data for tracing and inform future management approaches.
While there is no current evidence of active White Spot infection in NSW wild prawn populations, trace levels of White Spot DNA were found in a small number of wild caught prawns from the Clarence Estuary.
NSW DPI confirmed on Monday 6 March 2023, that retesting results of wild caught prawn samples from the Clarence Estuary were negative for White Spot.
Continuing surveillance sampling of wild caught prawns and crustaceans will determine the significance of the trace level results and assist in determining the origin of the detection
The control order, issued under the NSW Biosecurity Act 2015 restricts the movement of raw, uncooked decapod crustaceans from the Clarence Estuary while containment, source detection and surveillance activities are underway (see map below).
The control order in place means prawns and polychaete worms may only be moved out of the Clarence River Control Zone if they have been cooked.
The response strategy employed is based on the AQUAVETPLAN WSD Response Strategy, and relevant enterprise and operational manuals, using powers under the Biosecurity Act 2015 and related orders.
There are exemptions for certain uncooked decapod seafood species, such as crabs and lobsters, to be moved out of the estuary for the purpose of human consumption only. These low-risk species must be cooked by the end consumer as soon as possible upon arrival at the destination. Sale of these low-risk species can proceed.
Any person in possession of prawns that have originated from the Clarence River Control Zone from 12 to15 February 2023 must contact NSW DPI as soon as practicable by either calling the Emergency Animal Disease Hotline on 1800 675 888 or emailing aquatic.biosecurity@dpi.nsw.gov.au
Consumers are assured that White Spot does not pose a threat to human health or food safety. NSW seafood, including prawns, remains safe to eat.
Further investigations and testing for all potential entry pathways are underway.
NSW DPI has been working closely with the affected farms, the seafood industry and other state and national government agencies to ensure containment and complete surveillance activities in wild prawns in the area.
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White Spot is highly contagious to prawns and can cause high rates of mortality in affected stock. Other crustaceans can be carriers of White Spot, but they are rarely impacted.
White Spot spread through Asian prawn farming regions rapidly in the 1990s and established in farmed prawn in the Americas - causing widespread losses.
NSW DPI is acting swiftly, working with two farms to contain and eradicate White Spot on the properties. NSW DPI is ensuring both farms manage the detection with appropriate biosecurity measures in place to minimise the risk of spread. Accelerated destocking and destruction activities have been completed on both farms.
The response strategy employed is based on the AQUAVETPLAN WSD Response Strategy, and relevant enterprise and operational manuals, using powers under the Biosecurity Act 2015 and related orders.
Formal biosecurity directions have been in place on each of the affected farms since the detection of White Spot on the farms. These directions ensure appropriate biosecurity risk mitigation is in place throughout the response. In line with the National AQUAVETPLAN White Spot Disease Strategy Manual requirements each farm undertakes salvage harvest of marketable prawns prior to full destruction of the affected farm stock in a specific timeframe, followed by specified decontamination activities.
Any person in possession of prawns that have originated from the Clarence River Control Zone from 12-15 February 2023 must contact NSW DPI as soon as practicable be either calling the Emergency Animal Disease Hotline on 1800 675 888 or by emailing aquatic.biosecurity@dpi.nsw.gov.au
Surveillance and source detection is underway to help inform longer term biosecurity management.
The incident management team is considering assistance options for industry and is committed to working closely with industry on next steps.
Signs of White Spot in aquaculture within tanks and ponds include:
Prawns may display:
Please note, as with any aquatic disease, diagnosis cannot be made without appropriate laboratory testing. For information on how to submit samples for diagnosis contact NSW DPI Aquatic Biosecurity on (02) 4916 3900 or the Emergency Animal Disease Hotline on 1800 675 888 or by email to aquatic.biosecurity@dpi.nsw.gov.au.
For further information on the characteristics of White Spot see:
Prawns are safe to eat as White Spot does NOT pose any threat to human health or food safety.
In December 2016 White Spot was detected in farmed prawns in south-east Queensland. For details see www.outbreak.gov.au.
Since the outbreak of White Spot in southeast Queensland in 2016, NSW DPI has been undertaking annual surveillance in accordance with a nationally agreed Proof of Freedom program, with no evidence of White Spot observed.
In August 2022 White Spot was detected in an enclosed facility at a prawn farm in northern NSW. NSW DPI acted quickly to issue formal biosecurity measures and worked closely with the farm to contain the detection within the facility. All prawns within the facility were destroyed and the facility was decontaminated. NSW DPI undertook surveillance of wild prawns in the estuarine area and offshore from the facility with no evidence of White Spot found.
Investigations of pathways of white spot entering the facility were unable to identify a specific origin for the virus in NSW.
NSW DPI continues to work with other states, territories and the Australian Government to help minimise the risk of White Spot spreading.
Since March 2017, NSW DPI has established a Control Order which restricts the importation into NSW of any uncooked decapod crustaceans or polychaete worms from a designated area encompassing all affected areas in south-east Queensland. NSW DPI has conducted annual surveillance of wild prawn populations in northern NSW since the 2016 outbreak in Queensland, with no evidence of White Spot in any NSW samples tested. NSW DPI is also conducting an epidemiological investigation to provide additional intelligence on possible infection pathways and risks to wild crustacea.
Further investigations including collaboration with NSW EPA are being undertaken to investigate all potential causes of this outbreak.
White Spot is declared as Prohibited Matter under Schedule 2 of the Biosecurity Act 2015. This includes a duty to report the presence or suspected presence of White Spot at any place to NSW DPI and strictly prohibits any dealings with this biosecurity matter or associated carriers.
Other states have imposed different trade restrictions on uncooked prawns, decapod crustaceans and polychaete worms. Please check the relevant fisheries website - see www.outbreak.gov.au for more information.
Report any signs of unusual mortality or other suspicions of White Spot
If you suspect White Spot, call the 24-hour Emergency Animal Disease Hotline: 1800 675 888
White Spot affects decapod crustaceans including prawns, crabs and lobsters. It is highly contagious to farmed prawns and other cultured crustacea, and can cause high rates of mortality in affected stock.
It was the cause of significant mortality in prawn farms in south-east Queensland in 2016. It was detected and eradicated from an enclosed prawn facility in NSW in August 2022.
Prior to the detection in February 2023, it was initially discovered within an enclosed facility at a prawn farm in northern NSW via routine testing and was confirmed by laboratory analysis on 23 August 2022.
Prior to this detection, White Spot had never been detected in NSW.
Since 2016, DPI has been conducting routine surveillance in NSW with no evidence of White Spot.
Recent surveillance completed on 7 September 2022 found no evidence of White Spot in NSW wild prawn populations.
Ongoing tracing and surveillance activities are being undertaken to identify the source of the White Spot and how it got into NSW.
DPI has responded swiftly and has worked closely with the affected business, seafood industry and other state and federal jurisdictions to ensure rapid containment and management of the recent detection on the northern NSW prawn farm.
The short-term control order, first issued on Thursday 16 February 2023 and renewed on 1 March 2023, restricts the movement of raw, uncooked decapod crustaceans from an area defined as the Clarence River Control Zone, while containment, source detection and surveillance activities are underway. The NSW Government has had movement restrictions in place to limit the risk of White Spot entering our state since it was first detected in Queensland.
Protocols are in place for prawn production facilities in NSW which allow for early detection, containment and eradication of aquatic health issues.
Surveillance within the Clarence Estuary commenced on 16 February 2023.
The sequencing tests indicate the strain of white spot virus detected in NSW on 12 February 2023 shows strong similarity to the strain detected in NSW in August 2022. It is not the same as the south-east Queensland strain detected in 2016.
Preliminary results from wild surveillance have indicated a low level of white spot DNA in a small number of prawn samples. The significance of these results is unclear, and there remains no evidence of active presence of white spot syndrome virus in these wild crustacean populations.
NSW DPI confirmed on Monday 6 March 2023, that retesting of wild caught prawns samples from the Clarence Estuary for White Spot is negative.
Additional surveillance is gathering crucial information to help inform future management of White Spot in NSW.
Since 2016, DPI has been conducting routine surveillance in NSW with no evidence of White Spot.
As part of the August 2022 detection, NSW DPI has completed surveillance of wild prawn populations in the estuarine and offshore areas of northern NSW where White Spot was detected and eradicated from a prawn facility.
There was no evidence of White Spot in any of these prawns.
Surveillance needs and priorities, including proof of freedom, are being considered by a national Aquatic CCEAD working group. Surveillance plans will be developed based on the AQUAVETPLAN Disease Strategy - White spot disease and the WOAH Aquatic Animal Health Code. Resourcing will need to be considered.
White Spot could cause major impacts on the prawn farming and prawn fishing communities and associated industries on which many people rely to make a living.
This is why NSW DPI has worked closely with the affected prawn farm, industry and our state and federal counterparts in order to contain and manage this detection. Formal control measures were promptly issued to the affected farm. Tracing and surveillance are underway. A a short-term control order , first issued on Thursday 16 February 2023 and renewed on 1 March 2023, is in force up and including 28 March 2023. This control order restricts the movement of raw, uncooked decapod crustaceans from an area defined as the Clarence River Control Zone while containment, source detection and surveillance activities are underway.
Prawns with White Spot may have:
Biosecurity is a shared responsibility, and everybody plays a part in safeguarding Australia’s and NSW’s biosecurity, protecting our economy, environment and community and our reputation as a clean and safe producer of healthy seafood.
Any questions about or suspicions of White Spot should be directed to the Emergency Animal Disease 24-hour Hotline on 1800 675 888.
Further information about White Spot can be found on the Australian Government outbreak.gov.au website
No. Currently, there is insufficient evidence from this trace detection to indicate that there is active presence of white spot syndrome virus in these wild prawn populations. The explanation and source of the trace detection of white spot DNA is still under investigation.
DPI is sampling of a range of wild crustacean species to help understand whether there is evidence to indicate white spot syndrome virus is present in those populations in the Clarence estuary. These samples are currently being tested at NSW DPI's Elizabeth Macarthur Agricultural Institute (EMAI).
The control order will be reviewed as further data is received. Prawns, crabs and other crustaceans are still being tested for the presence of white spot syndrome virus. As results are provided, there will be a continual decision-making process on future management. The renewed Control Order has been extended to 29 March 2023 and it will be subject to the investigations currently taking place.
Yes, restrictions have been in place since 2017. In Queensland, movement restrictions have been in place for high-risk animals such as prawns, yabbies and marine worms. This means they cannot be moved out of the Queensland white spot disease restricted area unless cooked first.
In Queensland, after extensive testing, it was declared the crabs, lobsters and bugs were exempt from the restrictions and may be removed from the restricted area if destined for human consumption. These high value species are predominantly used for the sole purpose of being eaten, so the risk of them being returned to natural waterways and spreading white spot is insignificant.
In Queensland it has been considered that movement restrictions will remain in place while they are still considered an effective means of control and containment for the disease to the defined region. A minimum of two years surveillance with no positive results for the virus is needed to return Queensland to an internationally recognised white spot free status.
Yes, you can continue to harvest school prawns, however all product (prawns, yabbies and polychaetae worms) must be cooked in the Clarence River Control Zone.
A control order on the movement of green prawns has been put in place to reduce the likelihood of white spot spreading. Currently this means that raw prawns, yabbies, nippers, shrimp and polychaete worms cannot be removed from the restricted area. This Control Order has established a control zone known as the Clarence River Control Zone.
This Control Zone covers:
(a) all areas adjacent to the Clarence River authorised by an aquaculture permit issued under the Fisheries Management Act 1994,
(b) the Clarence River consisting of all waters within the boundary, and
(c) all waters of Lake Wooloweyah.
The control order will control the movement of uncooked prawns that could potentially impact other estuaries such as the Hawkesbury and Hunter estuary prawn trawl fisheries and numerous Estuary General prawn fisheries throughout NSW.
The order will also ensure that other product caught in NSW outside of the control order area, can be sent interstate, with minimal controls.
No. White spot disease is a major biosecurity threat to prawns and other crustaceans, but it does not pose a threat to human health or food safety. Prawns sold for human consumption are still safe to eat.
Yes, raw high valued crustaceans defined as ‘excluded carriers’ under the Control Order can be moved uncooked into and within NSW, including for sale purposes, provided that:
However, you are required to ensure that:
DPI are investigating testing and treatment options to consider this industry request.
SMS and emails will be provided to key stakeholders and effected share and endorsement holders as information or decisions are made. This white spot web page on the NSW DPI website has been established to be a central source of information.
NSW DPI is prioritising the testing for white spot syndrome virus from the Clarence estuary to support the response. The samples are being transported to the EMAI as quickly as possible with expedited arrangements with couriers. Samples are being processed daily (including weekends). The timing is dependent on time of sample collection, transport time to the lab and number of samples to process.
Yes, DPI has been participating in a national white spot surveillance program since the Queensland detection. White spot has never been detected in NSW waters before this current 2023 event.
On the initial report, assessments are undertaken to review each individual case. White Spot disease in Australia is guided by the agreed national disease strategy – AQUAVETPLAN – Disease Strategy White Spot Disease .
Once suspicion of white spot disease has been confirmed, the Australian Chief Veterinary Officer is notified and the Aquatic Consultative Committee on Emergency Animal Disease (AqCCEAD) is formed. AqCCEAD membership comprises the Australian Chief Veterinary Officer, state or territory chief veterinary officers or directors of fisheries, and representatives from Department of Agriculture and Water Resources and the CSIRO Australian Animal Health Laboratory. AqCCEAD shares information and makes decisions on the management of an emergency aquatic animal disease incident until it decides the disease or threat no longer exists, or a national response is no longer required. NSW DPI uses the Biosecurity Act 2015 to enact legal instruments (such as a control order) based on the biosecurity risk. A control order can be made by the Minister if there is reasonable belief it is necessary to prevent, eliminate, minimize or manage a biosecurity risk or impact.
NSW DPI issued a a short-term control order on 16 February 2023 to restrict the movement of raw, uncooked prawns, other decapod crustaceans (such as crabs and lobsters) and polychaete worms from the Clarence River Control Zone. This was extended on 1 March 2023 and will remain in force until 29 March 2023. As the response to the disease evolves and new information is obtained, the control order will be reviewed. While this process creates a level of uncertainty for stakeholders, it is the best process available to make decisions in real time to try a minimize any unnecessary disruption to industry.
DPI NSW will be looking to partner with industry to develop programs to support the sector. As this event has not been declared an emergency, there are no triggers to automatically provide compensation.
No, the event is not a declared emergency event and compensation is not payable.
Under the Biosecurity Act 2015, a movement control order has been put in place – which differs to an emergency order. This is because white spot disease is not a new disease in Australian waters. This was the same in August 2022 during the separate response to the detection in an enclosed prawn facility.
Individual Biosecurity Directions and the control orders issued under the Biosecurity Act 2015 are the appropriate instruments to manage the biosecurity risk and biosecurity impact of White Spot Disease in NSW.
NSW DPI and industry will approach the Australian Government for assistance. The Australian Government supported a significant package to assist prawn farmers and fishers through the Queensland event.
NSW DPI is working closely with industry and FRDC to better manage impacts of White Spot. This includes active extension programs to increase awareness in the industry.
NSW DPI is actively communicating with recreational fishers to stress the importance of never using prawns intended for human consumption as baitand delivering important information to help protect the prawn industry.
This Control Order applies to everyone who fishes within the Clarence River Control Zone. including recreational fishers, and who interact with any of the following: