TROUT 2013 - simulating VHS outbreaks

Report on Exercise TROUT 2013 - Implementation of and activities related to a Viral Haemorrhagic Septicaemia (VHS) simulation exercise for the Nordic and Baltic Countries conducted 4th - 5th December 2013, Bergen, Norway

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Fish diseases are a major concern for aquaculture where fish are commercially reared. In the Nordic-Baltic countries aquaculture is currently taking place in freshwater fish farms and in marine fish farms. A range of viral diseases can cause devastating losses to fish rearing and wild fish stocks. Viral hemorrhagic septicemia (VHS) – also known as “Egtved disease” - is a viral fish disease which affects a large number of freshwater and marine fish. The rainbow trout is very susceptible to the disease.This report provides information on the preparatory work and the conduct a simulation exercise code-named “TROUT 2013”. The aim of the exercise was to test National VHS Contingency Plans.




This report contains details of a Nordic-Baltic Viral Haemorrhagic Septicaemia (VHS) table — top simulation exercise, codenamed TROUT 2013. The scenario for the exercise was prepared by the Norwegian Food Safety Authority and the implementation took place in Bergen. During the overall planning and preparatory work the Nordic-Baltic Veterinary Contingency Group took into account that many marine aquaculture industries and pond fish systems located in the Nordic-Baltic countries in the past have suffered major production losses due to fish disease epidemics. One of the most devastating viral diseases is: Viral haemorrhagic septicaemia (VHS).


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