OIE: Low pathogenic avian influenza (poultry), Canada

OIE: Low pathogenic avian influenza (poultry), Canada
submited by kickingbird at Jul, 12, 2016 8:54 AM from OIE

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
Reason for notification	Reoccurrence 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

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

ONTARIO (St. Catharines)

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	14000	13	0	0	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%	0.00%

* 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