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

OIE: Highly pathogenic avian influenza, Hong Kong (P.R. China)
submited by kickingbird at Jan, 5, 2010 19:34 PM from OIE

Information received on 05/01/2010 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	29/12/2009
Date of first confirmation of the event	31/12/2009
Report date	05/01/2010
Date submitted to OIE	05/01/2010
Date event resolved	29/12/2009
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	04/2009
Manifestation of disease	Sub-clinical infection
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 (Hok Tau)

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 on all poultry farms, poultry markets, pet bird shops, park birds and wild birds in Hong Kong. This H5N1 infected wild bird was detected in our ongoing surveillance programme on wild birds. No spread of the disease was evident. As this was a dead wild bird, the date of end of the event is the same as the finding of the bird (29 December 2009).

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	31/12/2009	Positive
Wild species	polymerase chain reaction (PCR)	31/12/2009	Positive
Wild species	virus isolation	04/01/2010	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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