OIE: Highly pathogenic avian influenza, Hong Kong (SAR

OIE: Highly pathogenic avian influenza, Hong Kong (SAR - PRC)
submited by kickingbird at Dec, 24, 2011 7:46 AM from OIE

Information received on 23/12/2011 from Dr Thomas Sit, Chief Veterinary Officer / Assistant Director (Inspection & Quarantine), Agriculture, Fisheries and Conservation Department, Hong Kong Special Administrative Region Government, Hong Kong , Hong Kong (SAR - PRC)

Summary

Report type	Immediate notification
Start date	17/12/2011
Date of first confirmation of the event	20/12/2011
Report date	23/12/2011
Date submitted to OIE	23/12/2011
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	13/12/2011
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: 2

Location(s)

HONG KONG (5 Tin Wu Road, Tin Shui Wai; 4 Hing Wah Street, Cheung Sha Wan)

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Wild species		1	1	0	0
Birds	19452	1	1	19451	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Wild species	**	**	100.00%	**
Birds	0.01%	0.01%	100.00%	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 and pet bird shops in Hong Kong. The H5N1 infected wild bird was detected in ongoing surveillance program on wild birds. The date of the outbreak concerning wild birds ended is the same as the date the bird was found (17 December 2011).
A total of 19,451 poultry, including 15,569 chickens, 810 pigeons, 1,950 pheasants and 1,122 silky fowls were culled in the Cheung Sha Wan Temporary Wholesale Poultry Market on 21 December 2011. Importation of live poultry and movement of poultry in local farms is banned for 21 days.
Surveillance and monitoring of local chicken farms has been stepped up. So far, no H5 virus was detected in samples taken from the 30 chicken farms in Hong Kong.

Control measures

Measures applied	Stamping out Quarantine Movement control inside the country Screening Zoning Disinfection of infected premises/establishment(s) Dipping / Spraying 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 & Conservation Department (National laboratory)

Tests and results

Species	Test	Test date	Result
Wild species	immunohistochemical test	20/12/2011	Positive
Wild species	polymerase chain reaction (PCR)	20/12/2011	Positive
Wild species	virus isolation	23/12/2011	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 continuing. Weekly follow-up reports will be submitted.

See Also:

http://www.oie.int

Latest news in those days:

USCDC Confirms Human Cases of H5 Bird Flu Among Colorado Poultry Workers 1 days ago
GISAID: H5N1 Bird Flu Circulating in Dairy Cows in the United States 2 days ago
USCDC: Colorado Reports Three Presumptive Positive H5 Cases in Poultry Workers 4 days ago
USCDC: A(H5N1) Bird Flu Response Update, July 12, 2024 5 days ago
Avian flu: increased vigilance recommended 6 days ago

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