OIE: Highly pathogenic avian influenza, Hong Kong (P.R. China)

OIE: Highly pathogenic avian influenza, Hong Kong (P.R. China)
submited by kickingbird at Apr, 8, 2010 18:36 PM from OIE

Information received on 08/04/2010 from Dr Thomas Sit, Assistant Director , Inspection & Quarantine, Agriculture, Fisheries and Conservation Department, Cheung Sha Wan , Hon Kong , Hong Kong (P.R. China)

Summary

Report type	Immediate notification (Final report)
Start date	26/03/2010
Date of first confirmation of the event	29/03/2010
Report date	07/04/2010
Date submitted to OIE	08/04/2010
Date event resolved	26/03/2010
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	29/12/2009
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H5N1
Nature of diagnosis	Laboratory (advanced)
This event pertains to	the whole country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Location(s)

HONG KONG (Mai Po San Tsuen, Yuen Long)

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Wild species		1	1	0	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Wild species	**	**	100.00%	**

* Removed from the susceptible population through death, destruction and/or slaughter
** Not calculated because of missing information

Epidemiology

Source of the outbreak(s) or origin of infection

Unknown or inconclusive

Epidemiological comments

An intensive surveillance system is in place for all poultry farms, poultry markets, pet bird shops and wild birds in Hong Kong.
This H5N1 infected wild bird was detected in the frame of the ongoing surveillance programme on wild birds. No spread of disease was evident.
As a precautionary measure, the Mai Po Nature Reserve has been temporarily closed to visitors for 21 days starting from 31 March 2010.
As this was a wild bird case, the date the event ended is the same as the date the bird was found (26 March 2010).

Control measures

Measures applied	Screening Disinfection of infected premises/establishment(s) No vaccination No treatment of affected animals
Measures to be applied	No other measures

Diagnostic test results

Laboratory name and type

Tai Lung Veterinary Laboratory, Agriculture, Fisheries and Conservation Department (National laboratory)

Tests and results

Species	Test	Test date	Result
Wild species	immunohistochemical test	29/03/2010	Positive
Wild species	polymerase chain reaction (PCR)	29/03/2010	Positive
Wild species	virus isolation	01/04/2010	Positive

Laboratory name and type

Department of Microbiology, University of Hong Kong (Regional Reference Laboratory)

Tests and results

Species	Test	Test date	Result
Wild species	gene sequencing		Pending

Future Reporting

The event is resolved. No more reports will be submitted.

See Also:

http://www.oie.int

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