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Highly pathogenic avian influenza, Canada
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Information received on 03/12/2014 from Dr Martine Dubuc, OIE Delegate for Canada, Chief Food Safety Officer Vice-President, Science Branch, Health Ministry,
Canadian Food Inspection Agency, Ottawa, Canada
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Summary
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Outbreak 1 (BC-2014-NAI-001) |
Chilliwack, British Columbia |
Date of start of the outbreak |
30/11/2014 |
Outbreak status |
Resolved (07/03/2015) |
Epidemiological unit |
Farm |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Birds |
12800 |
700 |
700 |
12100 |
0 |
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Affected population |
BC-2014-NAI-001
Chicken broiler breeder farm.
The affected barn holds a flock of 24 weeks of age (10% mortality).
An adjacent barn, not affected, contains a flock of 47 weeks of age. |
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Outbreak 2 (BC-2014-NAI-002) |
Abbotsford, British Columbia |
Date of start of the outbreak |
30/11/2014 |
Outbreak status |
Resolved (05/03/2015) |
Epidemiological unit |
Farm |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Birds |
28000 |
7700 |
7700 |
20300 |
0 |
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Affected population |
BC-2014-NAI-002
Meat turkey farm
Affected barn: 83 days of age toms (70% mortality).
In addition, hens and 2 week old poults on the premises with normal mortality rate.
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Summary of outbreaks |
Total outbreaks: 2 |
Total animals affected |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Birds |
40800 |
8400 |
8400 |
32400 |
0 |
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Outbreak statistics |
Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
Birds |
20.59% |
20.59% |
100.00% |
100.00% |
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*Removed from the susceptible population through death, destruction and/or slaughter |
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Epidemiology
Source of the outbreak(s) or origin of infection |
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Epidemiological comments |
Important note: Although this event is reported as highly pathogenic avian influenza (HPAI), full subtyping and pathogenicity index (IVPI) are not yet completed. Reporting as HPAI is based on preliminary testing and clinical signs.
Sudden high mortality (10% in outbreak in Chilliwack and 50% in outbreak in Abbotsford) within 24-48 hrs. Preliminary testing done at the British Columbia Provincial Laboratory indicates presence of H5 avian influenza virus. Additional testing currently underway at the Canadian Food Inspection Agency (CFIA) National Centre for Foreign Animal Disease (NCFAD). |
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Control measures
Measures applied |
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Quarantine
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Vaccination prohibited
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No treatment of affected animals
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Measures to be applied |
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Movement control inside the country
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Screening
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Disinfection / Disinfestation
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Stamping out
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Zoning
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Diagnostic test results
Laboratory name and type |
Species |
Test |
Test date |
Result |
Animal Health Centre, British Columbia Ministry of Agriculture (Local laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
01/12/2014 |
Positive |
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Future Reporting
The event is continuing. Weekly follow-up reports will be submitted. |
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Map of outbreak locations
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