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

Information received on 09/05/2018 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. 1
Date of start of the event 03/04/2018
Date of confirmation of the event 16/04/2018
Report date 07/05/2018
Date submitted to OIE 09/05/2018
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 (17/04/2018)
Follow-up report No. 1 (07/05/2018)
New outbreaks (1)
Outbreak 1 Guyuan, Yuanzhou District, Ningxia
Date of start of the outbreak 25/04/2018
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 86000 3000 2210 83790 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 86000 3000 2210 83790 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 3.49% 2.57% 73.67% 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
  • Surveillance outside containment and/or protection zone
  • 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) 07/05/2018 Positive
Harbin National Avian Influenza Reference Laboratory (OIE Reference Laboratory) Birds virus isolation 07/05/2018 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.