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#Canada - High pathogenicity avian #influenza #H5N5 viruses (#poultry) (Inf. with) - Immediate notification

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By G.M.

On January 24, 2025, the Canadian Food Inspection Agency (CFIA) was notified of mortality in a non-commercial backyard layer poultry farm in Newfoundland and Labrador. The CFIA National Centre for Foreign Animal Disease has confirmed on February 12, 2025 that the virus was H5N5. The HA of the H5 virus from the samples belongs to Eurasian Gs/GD lineage HPAI H5N1 (2.3.4.4b) with cleavage site motif of “PLREKRRKR/GLF”, compatible with HPAI viruses. The sample contained AI virus similar to European like - H5N5 (2023) viruses which came to Canada via the Atlantic flyway. The viruses contained wholly Eurasian H5N5 genome segments. The CFIA has immediately quarantined the IP and is implementing strict movement controls and a stamping out policy. Primary control zone (PCZ) has been put in place around the IP. Surveillance is ongoing in the affected areas. WOAH data on poultry and non-poultry can be visualized and extracted on the AI dashboard in domestic birds available at https://cahss.ca/cahss-networks/poultry-new (select poultry categories to show data related to HPAI poultry events 4294, 5229, 6003, and 6267). Wildlife surveillance as well as the Canadian Notifiable Avian Influenza Surveillance System (CanNAISS) activities for poultry are ongoing in Canada.

Source: WOAH, https://wahis.woah.org/#/in-review/6267

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