CANADA - The Canadian Food Inspection Agency (CFIA) has confirmed a low pathogenicity H7 avian influenza virus in wild birds in central and western Canada.
The birds were sampled through Canada’s Inter-Agency Wild Bird Influenza Survey, which serves as an early warning system designed to detect avian influenza viruses circulating in the wild that could be transmitted to domestic poultry.
Low pathogenicity influenza viruses commonly circulate in the wild bird population with little or no impact on the health of wild birds or people.
However, H5 and H7 avian influenza viruses are known to have the ability to mutate from low pathogenicity to highly pathogenic forms once introduced into domestic poultry, potentially causing high rates of disease and mortality in birds.
Low pathogenicity influenza viruses commonly circulate in the wild bird population with little or no impact on the health of wild birds or people.
However, H5 and H7 avian influenza viruses are known to have the ability to mutate from low pathogenicity to highly pathogenic forms once introduced into domestic poultry, potentially causing high rates of disease and mortality in birds.
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