OIE: Highly pathogenic avian influenza(H7N9), China (People´s Rep. of)

Information received on 24/03/2017 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	19/03/2017
Date of confirmation of the event	24/03/2017
Report date	24/03/2017
Date submitted to OIE	24/03/2017
Reason for notification	New strain of a listed disease
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H7N9
Nature of diagnosis	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

HUNAN ( Yongzhou, Dongan )

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	189676	29760	18497	171179	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	15.69%	9.75%	62.15%	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	Movement control inside the country Screening Disinfection / Disinfestation Stamping out Vaccination permitted (if a vaccine exists) No treatment of affected animals
Measures to be applied	No other measures

Diagnostic test results

Laboratory name and type

Harbin National Reference Lab for Avian Influenza ( OIE Reference Laboratory )

Tests and results

Species	Test	Test date	Result
Birds	virus sequencing	24/03/2017	Positive

Future Reporting

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

Fulltext of outbreak investigation in Chinese can be downloaded at: http://www.flu.org.cn/scn/article_detail.asp?articleId=12437