OIE: Highly pathogenic avian influenza ,Canada

OIE: Highly pathogenic avian influenza ,Canada
submited by kickingbird at Apr, 10, 2015 17:48 PM from OIE

nformation received on 08/04/2015 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	Immediate notification
Date of start of the event	03/04/2015
Date of confirmation of the event	05/04/2015
Report date	08/04/2015
Date submitted to OIE	08/04/2015
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
Serotype	H5N2
Nature of diagnosis	Clinical, Laboratory (advanced)
This event pertains to	a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

ONTARIO ( Beachville )

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	45000	9000	9000

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	20.00%	20.00%	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
Contact with wild species

Epidemiological comments

Sudden high mortality (approximately 25% within 48 hours). The National Centre for Foreign Animal Disease - Canadian Food Inspection Agency (CFIA) has confirmed that the virus was a H5N2. Preliminary testing indicates that the virus is similar to other Eurasian origin H5 outbreaks currently circulating in North America and the HA0 cleavage site sequence is typical of HPAI viruses. Additional testing is underway.

This outbreak of H5N2 is not linked with the H5N2 outbreaks that affected the commercial poultry in the province of British Columbia late in 2014. One possibility is that the current H5N2 outbreak in Ontario is related to wild birds migration (Mississipi flyway). Wild waterfowls (ducks, geese, swans) were observed around the barns within the last 30 days.

The CFIA has immediately quarantined the infected farm and is implementing strict movement controls and a stamping out policy. The Canadian Notifiable Avian Influenza Surveillance System (CanNAISS) has been ongoing in Canada since 2008 and surveillance activities will be enhanced in Ontario.

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

University of Guelph - Animal Health Laboratory ( Local laboratory )

Tests and results

Species	Test	Test date	Result
Birds	real-time PCR	05/04/2015	Positive

Laboratory name and type

National Centre for Foreign Animal Disease - CFIA ( National laboratory )

Tests and results

Species