Investigation of the 2001-03 IHN Epizootic in Farmed Atlantic Salmon in British ColumbiaMicroform - 2004
Infectious hematopoietic necrosis (IHN) is a disease that affects several species of salmonids in western North America. In 1992, IHN was diagnosed in a population of farmed Atlantic salmon in British Columbia and the disease spread to 13 separate farm sites within 20 kilometres over the next four years. In summer 2001, IHN was again diagnosed in a population of farmed Atlantic salmon and, as in 1992, disease-caused mortality was significant. This report describes the 2001-03 IHN outbreak in British Columbia Atlantic salmon farms, including the initial source of infection, the mortality rates, individual outbreaks in five areas on the coast & Vancouver Island, changes made at farm sites after the IHN diagnosis, and the status of IHN as of 2003. The main section discusses possible factors associated with increased risk of IHN in Atlantic salmon and makes suggestions for minimizing risks.
Publisher: Victoria : Ministry of Agriculture, Fisheries & Food, 2004
Description: 39 p. : maps, ill
Branch Call Number: MF BC-DOC 105-04160