White Spot was detected in three northern NSW prawn farms in early 2023. These detections were confirmed by NSW Department of Primary Industries (DPI) and Australian Centre for Disease Preparedness (ACDP).
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.
NSW DPI is working with the affected stakeholders to ensure appropriate biosecurity measures are in place to minimise risk of spread. On-farm White Spot eradication activities are close to being finalised, with all three premises implementing a 40-day fallow period.
NSW DPI is continuing to implement biosecurity risk mitigation measures for White Spot under a management program.
Please report any unusual mortalities or suspicions of White Spot to the Emergency Animal Disease Hotline 1800 675 888 or email aquatic.biosecurity@dpi.nsw.gov.au
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 production losses.
The response strategy is based on the AQUAVETPLAN Disease Strategy Manual for White Spot Disease, and relevant enterprise and operational manuals, using powers under the Biosecurity Act 2015 and related orders.
The Biosecurity Control Order restricting the movement of raw, uncooked decapod crustaceans and polychaete worms from the Clarence River Control Zone has been extended for up to 2 years (up to June 2025) to support business and trade continuity in NSW and other parts of Australia.
The Control Order includes requirements which will enhance existing biosecurity measures on NSW prawn farms.
These measures relate to risk management improvements for:
Biosecurity directions have been in place on each of the affected farms since the detection of White Spot. Once the mandatory 40-day fallow period is completed at each farm, a 2-year long term surveillance program can commence. These surveillance outcomes will inform whether NSW and Australia can seek to self-declare the area as free from White Spot according to the World Organisation for Animal Health requirements for the purposes of trade.
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.
More information on the characteristics of White Spot:
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.
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.
In early 2023, White Spot was detected at three prawn farms in northern NSW, leading to the current management program.
NSW DPI continues to work closely with industry and 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.
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.
# Refer to NSW Fishing rules and regulations
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 crustaceans, 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.
White Spot had never been detected in NSW prior to August 2022.
Since 2016, DPI has been conducting routine surveillance in NSW with no evidence of White Spot.
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 outbreak and how it entered NSW.
What is NSW DPI doing to stop the spread of White Spot disease?
DPI has responded swiftly and continues to work closely with the affected businesses, seafood industry and other state and federal jurisdictions to ensure rapid containment and management of the detection on the northern NSW prawn farms.
The Control Order restricting the movement of raw, uncooked decapod crustaceans and polychaete worms from the Clarence River Control Zone has been extended for up to two years, until June 2025, to support business and trade continuity in NSW and other parts of Australia.
The control order includes new requirements which will enhance existing biosecurity measures on NSW prawn farms.
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 in 2016. These restrictions continue under this control order.
Surveillance within the Clarence River Estuary commenced on 16 February 2023. No confirmed cases of White Spot have been found in the estuary.
Prawn farm surveillance and DNA sequencing tests indicate the strain of White Spot virus detected on prawn farms in 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.
NSW DPI has undertaken extensive sampling of wild caught prawns and crabs from the Clarence River Estuary for White Spot with no positive detections found in more than 2500 samples.
A surveillance plan to support proof of freedom from the Clarence River Control Zone, has been approved by the national Aquatic Consultative Committee on Emergency Animal Disease (AqCCEAD). This surveillance plan is consistent with the Australian Aquatic Veterinary Emergency Plan (AQUAVETPLAN) Disease Strategy - White Spot disease and the WOAH Aquatic Animal Health Code.
Proof of freedom surveillance will be implemented once all three prawn farms have been decontaminated. If White Spot is not detected during the two-year proof of freedom phase, NSW will move to ‘self-declare’ freedom to the World Organisation for Animal Health and revise the movement restrictions, as required. If White Spot is detected, NSW DPI will work closely with affected industry stakeholders and other Australian jurisdictions to determine appropriate steps.
White Spot causes major impacts on the prawn farming and prawn fishing communities and associated industries on which many people rely to make a living.
NSW DPI has worked closely with the affected prawn farms, industry and our state and federal counterparts to contain and manage this detection. Formal control measures were promptly issued to the affected farms. Tracing and surveillance are underway. A control order, first issued on Thursday 16 February 2023 has been extended for up to two years, until June 2025. This control order restricts the movement of raw, uncooked decapod crustaceans from an area defined as the Clarence River Control Zone, and requires enhanced biosecurity measures on NSW prawn farms, while containment, source detection and surveillance activities are underway.
Prawns with White Spot may have:
Biosecurity is a shared responsibility. Everybody plays a part in safeguarding Australia’s and NSW’s biosecurity to help protect our economy, environment, community and reputation as a clean and safe producer of healthy seafood.
If you suspect White Spot in NSW prawns, please call the Emergency Animal Disease 24-hour Hotline, 1800 675 888.
More information about White Spot can be found on the Australian Government outbreak.gov.au website.
The Control Order restricting the movement of raw, uncooked decapod crustaceans and polychaete worms from the Clarence River Control Zone, and requiring enhanced biosecurity measures on NSW prawn farms, has been extended for up to two years, until June 2025, to support business and trade continuity in NSW and other parts of Australia.
Prawns, crabs and other crustaceans are being tested for the presence of White Spot during this two-year period according to a nationally agreed proof of freedom surveillance plan. NSW management of white spot will be reassessed according to the results of the surveillance.
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. Negative results for the virus from a minimum two-year surveillance program is needed to return Queensland to an internationally recognised White Spot free status.
Yes, you can continue to harvest school prawns. However, all produce including 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 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.
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:
You are required to ensure that:
Yes, DPI has participated in the national White Spot surveillance program since the Queensland detection. White Spot has not 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
Once suspicion of White Spot disease has been confirmed, the Australian Chief Veterinary Officer (ACVO) is notified and the relevant agency and ACVO request a meeting of the Aquatic Consultative Committee on Emergency Animal Disease (AqCCEAD).
AqCCEAD membership comprises the ACVO, state and territory chief veterinary officers or directors of fisheries and representatives from the relevant Australian Government authority and the CSIRO Australian Centre for Disease Preparedness.
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 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 and 27 March 2023 and 8 June 2023 and will remain in force until June 2025.
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 anyone who catches, handles or uses:
Yes, if you purchase these products at a store in NSW, you are free to move them.
Yes, you can move uncooked excluded carriers from the Control Zone into and within NSW provided that:
Excluded carrier species include:
No, unless:
Excluded carriers can be moved out of the control zone if the conditions in the Control Order are followed.
Yes, cooking carried out by recreational anglers within the zone and then eaten is permitted. This is strictly limited to ‘within the zone’ and can only occur on a boat using personal equipment.
A recreational fisher cannot take these crustaceans home to cook – that is prohibited under the Control Order.
No. Cooking must be carried out in an approved (licenced) food business and be for commercial sale, not personal use.
Yes, as long as: