Following on from the media statement issued on 9 December 2016, white spot disease has now been confirmed on four prawn farms in south-east Queensland.
In early testing, a small number of samples taken from the Logan River had returned positive results, but hundreds of samples taken and tested since have shown no further positive results.
Further samples are being collected from nearby prawn farms, as well as from the Logan, Albert, Pine and Brisbane rivers, and testing and surveillance activities are ongoing.
Biosecurity Queensland has enacted a range of movement and fishing restrictions in the Logan and Albert rivers to prevent further spread of the disease.
The Queensland Department of Agriculture and Fisheries (QDAF) has completed treatment of one of the infected properties with treatment of the remaining three underway.
The national Aquatic Consultative Committee on Emergency Animal Diseases is meeting regularly to ensure a robust, cross-jurisdictional response to this potentially devastating outbreak.
The source of the disease is being rigorously investigated but—despite current speculation in the media—the origin is as yet unknown.
White spot disease is a highly infectious disease of prawns, but does not pose a threat to human health or food safety.
For more information about the response to this incident, contact QDAF or visit the Outbreak website.