Low pathogenic avian influenza (poultry),
Canada
Information received on 08/07/2016 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 Immediate notification
Date of start of the event 04/07/2016
Date of confirmation of the event 07/07/2016
Report date 08/07/2016
Date submitted to OIE 08/07/2016
Date event resolved 20/09/2016
Reason for notification Recurrence of a listed disease
Date of previous occurrence 22/02/2011
Manifestation of disease Sub-clinical infection
Causal agent Low pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (08/07/2016)
Follow-up report No. 1 (14/07/2016)
Follow-up report No. 2 (30/11/2016)
New outbreaks (1)
Outbreak 1 (ONT-2016-NAI-001) St. Catharines, ONTARIO
Date of start of the outbreak 04/07/2016
Outbreak status Resolved (20/09/2016)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 14000 13 0 14000 0
Affected population ONT-2016-NAI-001 Commercial duck farm with 2 barns. The barn affected contains 14,000 10-12 week old ducks. No clinical signs or mortality. Second barn empty.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 14000 13 0 14000 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.09% 0.00% 0.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments On July 4, 2016, 30 birds from a domestic duck farm were sampled as part of an export surveillance testing for avian influenza and were submitted to the National Centre for Foreign Animal Disease (NCFAD). The ducks were clinically healthy. Total RNA was extracted from 30 swab samples; 15 tested positive for influenza A matrix, and 13 for H5 using real time RT-PCR assays. The neuraminidase was typed as N2 using short N-typing conventional RT-PCR assay. The sequence of hemagglutinin cleavage site motif is consistent with LPAI viruses of H5 subtype. Top matches of the sequenced 426 bp RT-PCR product are North American wild bird origin LPAI viruses of H5 subtype.
Control measures
Measures applied
  • Movement control inside the country
  • Screening
  • Traceability
  • Quarantine
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Zoning
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Disinfection / Disinfestation
  • Stamping out
  • Official disposal of carcasses, by-products and waste
Diagnostic test results
Laboratory name and type Species Test Test date Result
National Centre for Foreign Animal Disease - CFIA (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 07/07/2016 Positive
National Centre for Foreign Animal Disease - CFIA (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 07/07/2016 Positive
National Centre for Foreign Animal Disease - CFIA (National laboratory) Birds virus sequencing 07/07/2016 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations