Low pathogenic avian influenza (poultry),
Canada
Information received on 04/02/2009 from Dr Brian Evans, Chief Food Safety Officer/Chief Veterinary Officer, Office of the President, Canadian Food Inspection Agency, OTTAWA, Canada
Summary
Report type Follow-up report No. 2
Date of start of the event 12/01/2009
Date of confirmation of the event 23/01/2009
Report date 03/02/2009
Date submitted to OIE 04/02/2009
Date event resolved 11/03/2009
Reason for notification Recurrence of a listed disease
Date of previous occurrence 2005
Manifestation of disease Clinical disease
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 (24/01/2009)
Follow-up report No. 1 (31/01/2009)
Follow-up report No. 2 (03/02/2009)
Follow-up report No. 3 (11/02/2009)
Follow-up report No. 4 (06/03/2009)
Follow-up report No. 5 (03/04/2009)
Follow-up report No. 6 (11/06/2009)
Outbreaks There are no new outbreaks in this report
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
  • Wild birds
Epidemiological comments The CFIA National Centre for Foreign Animal Diseases (NCFAD) has now isolated a Notifiable Avian Influenza Virus (AIV) from the index farm. The AIV isolate was confirmed as H5N2. The closest match in Genbank for the N gene is A/American green-winged teal/California/HKWF406/2007(H5N2), accession number: CY033446. The closest match in Genbank for the H gene is A/American green-winged teal/California/HKWF609/2007(H5N2), accession number: CY033444, as reported in the immediate notification. Based on gene sequencing results, the virus was determined to be of low virulence. The NCFAD will now proceed with the determination of the IVPI index. Note by the OIE Animal Health Information Department: H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 10.4. on avian influenza of the Terrestrial Animal Health Code (2008).
Control measures
Measures applied
  • Screening
  • Quarantine
  • Stamping out
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Disinfection / Disinfestation
Diagnostic test results
Laboratory name and type Species Test Test date Result
CFIA National Center for Foreign Animal Diseases (National laboratory) Birds gene sequencing 02/02/2009 Positive
CFIA National Center for Foreign Animal Diseases (National laboratory) Birds intravenous pathogenicity index (IVPI) test 02/02/2009 Pending
CFIA National Center for Foreign Animal Diseases (National laboratory) Birds virus isolation 02/02/2009 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.