Spring viraemia of Carp (SVC)

Spring viraemia of Carp (SVC) is often a fatal haemorrhagic disease of common carp. It is caused by a rhabdovirus

Clinical signs of disease

  • exophthalmus (pop eye)
  • swollen abdomen (dropsy)
  • petechial (pinpoint): haemorrhages in the fatty tissue and muscle surrounding organs and stomach wall
  • haemorrhages on skin , gills,swim bladder

Diagnosis

  • isolation or direct immunofluorescence  or  ELISA
  • Virus neutralisation
  • PCR
  • Necropsy of infected fish reveals :-
  • splenomegaly with reticuloendothelial hyperplasia and enlarged melanomacrophage centres. 
  • The liver is hyperaemic with multifocal necrosis and degeneration. 
  • Kidney tubules are often clogged with casts

Treatment

There is no treatment once infected.

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