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

Information received on 18/02/2017 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	10/01/2017
Date of confirmation of the event	10/01/2017
Report date	18/02/2017
Date submitted to OIE	18/02/2017
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	2015
Manifestation of disease	Sub-clinical infection
Causal agent	Highly pathogenic avian influenza virus
Serotype	H7N9
Nature of diagnosis	Laboratory (advanced)
This event pertains to	a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

GUANGDONG ( Live bird markets )

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds		**

Outbreak statistics

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

* 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	Samples from live bird markets sent to the National Reference Laboratory for Avian Influenza by the Guangdong veterinary authotities tested positive for a highly pathogenic avian influenza H7N9 virus. Affected live poultry markets have been closed and surveillance is strengthened in the whole province.

Control measures

Measures applied	Movement control inside the country Screening Disinfection / Disinfestation Quarantine 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

National Reference Laboratory for Avian Influenza ( National laboratory )

Tests and results

Species	Test	Test date	Result
Birds	virus sequencing	10/01/2017	Positive

Future Reporting

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