H5N1 outbreaks confirmed in flock of turkeys in Guelph/Eramosa, in ducks in Centre Wellington
WELLINGTON COUNTY – Poultry producers are contending with a different sort of viral outbreak following several positive cases of avian influenza discovered in Wellington County poultry flocks.
A highly pathogenic H5N1 subtype has, as of April 4, been confirmed by the Canadian Food Inspection Agency (CFIA) in six southwestern Ontario flocks, of which two are in the county.
Also known as “bird flu,” the virus has been around for over a century, infecting the respiratory tracts of many types of birds, both domesticated and wild.
Subtypes are separated into two categories: low and high pathogenicity, depending on how sick birds get.
Although the virus does not present a food safety risk, the CFIA pays particular attention to “H5” subtypes because they mutate from low to high pathogenicity after infecting domestic birds, and cause high mortality.
It’s also the subtype most responsible for causing severe illness and death in people, with over half of human infections resulting in death, according to the Centre for Disease Control and Prevention.
The virus transmits to humans via the eyes, nose, mouth and can be inhaled through aerosols, although it’s uncommon.