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2019-11-21 11:35:23


OIE: Highly pathogenic avian influenza(HPAIV H7N9), China (People´s Rep. of)
submited by kickingbird at Jun, 2, 2017 9:29 AM from OIE

Information received on 25/05/2017 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 Follow-up report No. 2
Date of start of the event 19/03/2017
Date of confirmation of the event 24/03/2017
Report date 24/05/2017
Date submitted to OIE 25/05/2017
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
Related reports Immediate notification (24/03/2017)
Follow-up report No. 1 (12/05/2017)
Follow-up report No. 2 (24/05/2017)
New outbreaks (2)
Outbreak 1 Xingtai, Xingtai, HEBEI
Date of start of the outbreak 28/04/2017
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 30000 8500 5000 25000 0
Affected population The outbreak was observed in local layer farm through active surveillance.
Outbreak 2 Tianjin, Wuqing District, TIANJIN
Date of start of the outbreak 13/05/2017
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 99150 10000 6000 93150 0
Affected population The outbreak was observed in local layer farm by local veterinary authority through active surveillance.
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 129150 18500 11000 118150 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 14.32% 8.52% 59.46% 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 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 Reference Lab for Avian Influenza (OIE Reference Laboratory) Birds virus sequencing 24/05/2017 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
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