The World Organisation for Animal Health (WOAH) has offered updated information on four commercial poultry flocks in Canada that have been affected by highly pathogenic avian influenza (HPAI), the largest of which was a layer flock in Chilliwack, British Columbia.

The presence of all four flocks included in the latest WOAH reports was confirmed on September 12. Cases in Canada are initially reported by the Canadian Food Inspection Agency (CFIA), but those CFIA reports have not traditionally included information such as the types of poultry operations involved or the number of birds in those flocks.

According to the WOAH, the Chilliwack flock involved 70,000 laying hens.

The other three cases included in the WOAH report were more vague in their descriptions, only referring to the birds as “poultry.” However, information concerning those flock sizes was disclosed.

The largest of the remaining three was located in Willow Creek, Alberta, involving 19,030 birds. The other two were in Cut Knife, Saskatchewan, and Starland County, Alberta, and involved 17,140 and 1,884 birds, respectively.

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So far in 2022, 85 commercial poultry flocks in Canada have been affected by HPAI. Information concerning the sizes of 17 of those 85 has not been disclosed.

To learn more about HPAI cases in commercial poultry flocks in the United States and Canada, see an interactive map on WATTPoultry.com.

Read our ongoing coverage of the global avian influenza outbreak.

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In 2022, commercial poultry farms in North America and Europe have experienced some of the worst ever losses due to HPAI outbreaks. Attend the 2022 edition of Poultry Tech Summit on October 30 - November 1 in Atlanta, Georgia, to learn about the new technologies to improve on-farm biosecurity. This exclusive international gathering of industry-changing innovators, researchers, entrepreneurs, technology experts, investors and leading poultry producers focuses on the transition of innovative technologies into commercial applications to advance the poultry industry.

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