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Canada - 1 new outbreak of highly pathogenic avian influenza H5N2 on a broiler breeder commercial farm, Bright, Ontario (OIE, April 21, 2015)

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  • Canada - 1 new outbreak of highly pathogenic avian influenza H5N2 on a broiler breeder commercial farm, Bright, Ontario (OIE, April 21, 2015)

    Highly pathogenic avian influenza,
    Canada
    Information received on 21/04/2015 from Dr Martine Dubuc, OIE Delegate for Canada, Chief Food Safety Officer Vice-President, Science Branch, Health Ministry, Canadian Food Inspection Agency, Ottawa, Canada
    Summary
    Report type Follow-up report No. 1
    Date of start of the event 03/04/2015
    Date of confirmation of the event 05/04/2015
    Report date 21/04/2015
    Date submitted to OIE 21/04/2015
    Reason for notification Reoccurrence of a listed disease
    Date of previous occurrence 02/2015
    Manifestation of disease Clinical disease
    Causal agent Highly pathogenic avian influenza virus
    Serotype H5N2
    Nature of diagnosis Clinical, Laboratory (advanced)
    This event pertains to a defined zone within the country
    Related reports Immediate notification (08/04/2015)
    Follow-up report No. 1 (21/04/2015)
    New outbreaks (1)
    Outbreak 1 (ONT-2015-NAI-002) Bright, ONTARIO
    Date of start of the outbreak 15/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 27000 1000 1000
    Affected population ONT-2015-NAI-002 Broiler breeder commercial farm. Two barns with birds 29 weeks of age. One barn affected.
    Summary of outbreaks Total outbreaks: 1
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 27000 1000 1000
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds 3.70% 3.70% 100.00% **
    *Removed from the susceptible population through death, destruction and/or slaughter
    **Not calculated because of missing information
    Epidemiology
    Source of the outbreak(s) or origin of infection
    • Unknown or inconclusive
    • Contact with wild species
    Epidemiological comments Testing at the Canadian Food Inspection Agency (CFIA) National Centre for Foreign Animal Disease (NCFAD) on samples from outbreak ONT-2015-NAI-001 has confirmed HPAI H5N2 virus with an IVPI of 2.97. Testing has also confirmed a H5N2 avian influenza virus with the same pathogenicity based on preliminary molecular sequencing on one additional farm (ONT-2015-NAI-002) with clinical signs. On 12 April 2015, the CFIA announced the establishment of an Avian Influenza Control Zone in Ontario to control the movement of animals, products and equipment in the area to minimize disease spread. The boundary of the Avian Influenza Control Zone covers a 10km radius from the ONT-2015-NAI-001 premises confirmed to be infected with avian influenza, located in Oxford County, Ontario. All premises located within the Avian Influenza Control Zone have been placed under quarantine. The CFIA is monitoring these premises closely for any signs of disease. Infected premises ONT-2015-NAI-002 is also located in Oxford County. The farm is quarantined, disease control actions are in progress and a zone is being established. Humane depopulation of all susceptible animals on infected premises ONT-2015-NAI-001 was completed on 10 April 2015. The process for cleaning and disinfecting all barns has started. All activities on farm are under the direct supervision of the Canadian Food Inspection Agency (CFIA).
    Control measures
    Measures applied
    • Stamping out
    • Quarantine
    • Movement control inside the country
    • Screening
    • Zoning
    • Vaccination prohibited
    • No treatment of affected animals
    Measures to be applied
    • Disinfection of infected premises/establishment(s)
    Diagnostic test results
    Laboratory name and type Species Test Test date Result
    National Centre for Foreign Animal Disease - CFIA (National laboratory) Birds intravenous pathogenicity index (IVPI) test 19/04/2015 Positive
    National Centre for Foreign Animal Disease - CFIA (National laboratory) Birds virus isolation 09/04/2015 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.

    .../
    http://www.oie.int/wahis_2/public/wa...reportid=17537
    "Safety and security don't just happen, they are the result of collective consensus and public investment. We owe our children, the most vulnerable citizens in our society, a life free of violence and fear."
    -Nelson Mandela
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