Atlantic salmon farms around Vancouver Island have begun testing and formed a special outbreak management team after an IHN virus outbreak at one farm led to a site quarantine and the cull of more than half a million fish.
IHN usually kills a fish within a week of exposure and can kill up to 100 percent of an infected population.
LINK (via: The Winnepeg Free Press)
Here is what happened when the IHN virus made it's way into Chilean hatcheries.