Infectious Salmon Anemia (ISA)

Infectious salmon anemia (ISA) is a disease of farmed salmon caused by a virus of the same name. ISA virus is not a human health concern.

Disease outbreaks caused by this virus have occurred historically in Maine, New Brunswick, Canada, Chile, Norway, and other European countries. These outbreaks have resulted in severe mortality to farmed Atlantic salmon in these regions, and economic impacts have been significant to the aquaculture industries where outbreaks occurred.

ISA outbreaks have not been documented in any wild fish populations anywhere in the world.