Highly pathogenic avian influenza,
China (People's Rep. of)
Information received on 06/06/2018 from Dr Yu Kangzhen, National Chief Veterinary Officer , Veterinary Bureau , Ministry of Agriculture , Beijing, China (People's Rep. of)
Summary
Report type Immediate notification
Date of start of the event 22/05/2018
Date of confirmation of the event 30/05/2018
Report date 06/06/2018
Date submitted to OIE 06/06/2018
Date event resolved 05/06/2018
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
Related reports Immediate notification (06/06/2018)
Follow-up report No. 1 (04/12/2018)
New outbreaks (1)
Outbreak 1 Liaozhong District, Shenyang, Liaoning
Date of start of the outbreak 22/05/2018
Outbreak status Resolved (05/06/2018)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 17000 11000 9000 8000 0
Affected population Infected birds were layers.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 17000 11000 9000 8000 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 64.71% 52.94% 81.82% 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
  • Quarantine
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Disinfection
  • 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 Species Test Test date Result
Harbin National Avian influenza Reference Laboratory (OIE Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 30/05/2018 Positive
Harbin National Avian influenza Reference Laboratory (OIE Reference Laboratory) Birds virus isolation 30/05/2018 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations