Highly pathogenic avian influenza,
China (People's Rep. of)

Information received on 19/12/2008 from Dr Zhang Zhongqui, Deputy Director General , China Animal Disease Control Centre, Veterinary Bureau, Beijing, China (People's Rep. of)

Summary

Report type Immediate notification
Start date 09/12/2008
Date of first confirmation of the event 18/12/2008
Report date 19/12/2008
Date submitted to OIE 19/12/2008
Date event resolved 26/12/2008
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 07/2008
Manifestation of disease Sub-clinical infection
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
Related reports

New outbreaks
Outbreak 1 Xubei, Xunan, Dongtai, Yancheng, JIANGSU
Date of start of the outbreak 09/12/2008
Outbreak status Resolved (26/12/2008)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 160800 0 160800 0
Outbreak 2 Lingdong, Xinghe, Xihu, Hai'an, Nantong, JIANGSU
Date of start of the outbreak 09/12/2008
Outbreak status Resolved (26/12/2008)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 216198 0 216198 0
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 376998 ** 0 376998 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** 0.00% ** 100.00%

* 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

Control measures
Measures applied
  • Stamping out
  • Quarantine
  • Movement control inside the country
  • Vaccination in response to the outbreak (s)
    Administrative division Species Total Vaccinated Details
    JIANGSU Birds 43973002 Reassortant avian influenza virus vaccine, inactivated (Re-4+Re-5)
  • Disinfection of infected premises/establishment(s)
  • 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’s Reference Laboratory)
Tests and results
Species Test Test date Result
Birds haemagglutination inhibition test (HIT) 18/12/2008 Positive
Birds intravenous pathogenicity index (IVPI) test 18/12/2008 Positive
Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 18/12/2008 Positive

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

Map of outbreak locations
Location of current outbreaks

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