The authorities are also investigating 13 other sustpected cases of non-pathogenic strains of the disease.
The company involved, Acuimag, has destroyed the infected population.
The authorities are screening the facilities for a farming broodstock of salmon at another site that has been found positive for ISA.
One Case of ISA Found in Chile
CHILE - The Chilean National Marine Fisheries Service (SERNAPESCA) has reported there is one outbreak of Infectious Salmon Amaemia in the 11th Region.