OIE: Highly pathogenic avian influenza, China (People´s Rep. of)

OIE: Highly pathogenic avian influenza, China (People´s Rep. of)
submited by kickingbird at Dec, 13, 2011 6:45 AM from OIE

Information received on 12/12/2011 from Dr Zhang Zhongqiu, Director General , China Animal Disease Control Centre, Veterinary Bureau, Ministry of Agriculture, Beijing, China (People´s Rep. of)

Summary

Report type	Immediate notification
Start date	02/12/2011
Date of first confirmation of the event	12/12/2011
Report date	12/12/2011
Date submitted to OIE	12/12/2011
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	25/05/2010
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H5N1
Nature of diagnosis	Clinical, Laboratory (advanced)
This event pertains to	a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Location(s)

TIBET (Sangda, Duilongdeqing, Lhasa)

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	1865	290	290	1575	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	15.55%	15.55%	100.00%	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

Control measures

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

Diagnostic test results

Laboratory name and type

Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (national reference laboratory for avian influenza) (OIE抯 Reference Laboratory)

Tests and results

Species	Test	Test date	Result
Birds	haemagglutination inhibition test (HIT)	12/12/2011	Positive
Birds	intravenous pathogenicity index (IVPI) test	12/12/2011	Positive
Birds	reverse transcription - polymerase chain reaction (RT-PCR)	12/12/2011	Positive

Future Reporting

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

See Also:

http://www.oie.int

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