Salmonid Alphavirus (SAV).

Salmonid alphavirus (SAV), genus , family , is a single-stranded RNA virus affecting Atlantic salmon () and rainbow trout (). It is known to be responsible for pancreas disease (PD) and sleeping disease (SD) which are increasing problems, causing high fish mortality and economic losses in the European aquaculture industry. Pancreas disease was first described in Atlantic salmon in Scotland in 1976 and a similar disease caused by the closely related sleeping disease virus was first described in rainbow trout in France.