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

Information received on 18/09/2012 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
Date of start of the event	11/09/2012
Date of pre-confirmation of the event	18/09/2012
Report date	18/09/2012
Date submitted to OIE	18/09/2012
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	01/08/2012
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H5N1
Nature of diagnosis	Suspicion, Clinical, Laboratory (basic), Laboratory (advanced)
This event pertains to	the whole country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

GUANGDONG ( Dongjian, Zhanjiang )

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	73800	14050	6300	67500	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	19.04%	8.54%	44.84%	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 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

Harbin Veterinary Research Institute ( OIE’s Reference Laboratory )

Tests and results

Species	Test	Test date	Result
Birds	haemagglutination inhibition test (HIT)	18/09/2012	Positive
Birds	reverse transcription - polymerase chain reaction (RT-PCR)	18/09/2012	Positive
Birds	virus isolation	18/09/2012	Positive

Future Reporting

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