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

Information received on 13/05/2013 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	13/05/2013
Date of pre-confirmation of the event	13/05/2013
Report date	13/05/2013
Date submitted to OIE	13/05/2013
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	18/10/2012
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	a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

TIBET ( Qionglin village, Milin, Linzhi )

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	407	35	35	372	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	8.60%	8.60%	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 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 ( OIEs Reference Laboratory )

Tests and results

Species	Test	Test date	Result
Birds	haemagglutination inhibition test (HIT)	13/05/2013	Positive
Birds	reverse transcription - polymerase chain reaction (RT-PCR)	13/05/2013	Positive
Birds	virus isolation	13/05/2013	Positive

Future Reporting

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