OIE: Highly pathogenic avian influenza, United Kingdom

OIE: Highly pathogenic avian influenza, United Kingdom
submited by kickingbird at Jun, 6, 2008 8:55 AM from OIE

Information received on 05/06/2008 from Dr Nigel Gibbens, Chief Veterinary Officer, Department for Environment, Food and Rural Affairs, Department for Environment, Food and Rural Affairs, LONDON, United Kingdom

Summary

Report type	Immediate notification
Start date	22/05/2008
Date of first confirmation of the event	04/06/2008
Report date	05/06/2008
Date submitted to OIE	05/06/2008
Reason for notification	New strain of a listed disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H7N7
Nature of diagnosis	Laboratory (advanced)
This event pertains to	the whole country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location and Affected population

ENGLAND (Shenington, Oxfordshire) : Laying flock of Gallus Gallus.

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	25000	15000	10000	15000

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	60.00%	40.00%	66.67%	**

* Removed from the susceptible population through death, destruction and/or slaughter
** not_calc_miss_info

Epidemiology

Source of the outbreak(s) or origin of infection	Unknown or inconclusive
Epidemiological comments	First noted two weeks ago with mild clinical disease. Marked clinical disease in two sheds was then observed on 31 May 2008. Epidemiological investigation is in progress.

Control measures

Measures applied	Stamping out Movement control inside the country Screening Zoning Disinfection of infected premises/establishment(s) Vaccination prohibited No treatment of affected animals
Measures to be applied	No other measures

Diagnostic test results

Laboratory name and type

VLA Weybridge (OIE抯 Reference Laboratory)

Tests and results

Species	Test	Test date	Result
Birds	haemagglutination inhibition test (HIT)	05/06/2008	Positive
Birds	neuraminidase inhibition assay	05/06/2008	Positive
Birds	real-time PCR	05/06/2008	Positive
Birds	virus isolation	05/06/2008	Positive
Birds	virus sequencing	05/06/2008	Positive

Future Reporting

The event is continuing. Weekly follow-up reports will be submitted.

See Also:

http://www.oie.int

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