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Whitespot Update November 24, 2017


All the shrimp farms in the Logan River region have been decontaminated and are currently empty.  They will remain empty until May 31, 2018, as part of the strategy to eradicate the whitespot virus.


Queensland completed a state-wide testing for the virus in September 2017—with all samples returning negative results!  Two years of consecutive negative test results are required to prove the disease is no longer in Queensland waterways.


The next round of testing for the virus will commence in early 2018.



Whitespot Research Projects


Decontamination and Disposal Assessment Project: This project will formalize the plan to assess the effectiveness of the decontamination and disposal strategy activities undertaken on the infected shrimp farms during the whitespot disease outbreak.  The project will help assess the risk of future shrimp production in ponds previously infected with whitespot syndrome virus.  It will check the sediment from those ponds to see if whitespot is still present.


Gamma Irradiation of Shrimp: This project will determine the minimum effective dosage of gamma irradiation required to inactivate the whitespot virus in shrimp.  It will help establish an Australian standard for gamma irradiation of shrimp.


It’s expensive to treat shrimp with gamma irradiation.  This project aims to determine if a lower level of gamma irradiation could be used to treat shrimp, while maintaining certainty that no viable whitespot disease virus survives and that there is no risk of spreading the disease if the treated shrimp is used as bait.


Source: Email to Shrimp News International from the Queensland Department of Agriculture and Fisheries (Email, Webpage  Subject: White Spot Disease Update.  Helen Haapakoski (  November 24, 2017.


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