Low pathogenic avian influenza (poultry),
China (People's Rep. of)
Information received on 04/04/2013 from Dr Zhang Zhongqui, 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 04/04/2013
Date of pre-confirmation of the event 04/04/2013
Report date 04/04/2013
Date submitted to OIE 04/04/2013
Reason for notification New strain of a listed disease
Manifestation of disease Sub-clinical infection
Causal agent Low pathogenic avian influenza virus
Serotype H7N9
Nature of diagnosis Laboratory (basic), Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (04/04/2013)
Follow-up report No. 1 (05/04/2013)
Follow-up report No. 2 (10/04/2013)
Follow-up report No. 3 (16/04/2013)
Follow-up report No. 4 (22/04/2013)
Follow-up report No. 5 (24/04/2013)
Follow-up report No. 6 (26/04/2013)
Follow-up report No. 7 (05/05/2013)
Follow-up report No. 8 (09/05/2013)
Follow-up report No. 9 (21/05/2013)
Follow-up report No. 10 (16/01/2014)
Follow-up report No. 11 (26/01/2014)
Follow-up report No. 12 (11/02/2014)
Follow-up report No. 13 (28/02/2014)
Follow-up report No. 14 (07/03/2014)
Follow-up report No. 15 (21/03/2014)
Follow-up report No. 16 (06/05/2014)
Follow-up report No. 17 (09/07/2014)
New outbreaks (1)
Outbreak 1 Huhuai agricultural products wholesale market, Songjiang, Shanghai, SHANGHAI
Date of start of the outbreak 04/04/2013
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 20536 9 0 20536 0
Affected population 1 sample from pigeon for consumption,7 samples from chicken and 1 sample from the environment
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 20536 9 0 20536 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.04% 0.00% 0.00% 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
Epidemiological comments Up to date there is no evidence that China human H7N9 cases come from this pigeon case. Further investigations are on-going.
Control measures
Measures applied
  • Control of wildlife reservoirs
  • Quarantine
  • Movement control inside the country
  • Screening
  • Zoning
  • Disinfection of infected premises/establishment(s)
  • Dipping / Spraying
  • No vaccination
  • No treatment of affected animals
Measures to be applied
  • Stamping out
Diagnostic test results
Laboratory name and type Species Test Test date Result
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE’s Reference Laboratory) Birds gene sequencing 04/04/2013 Positive
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE’s Reference Laboratory) Birds haemagglutination inhibition test (HIT) 04/04/2013 Positive
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE’s Reference Laboratory) Birds pathogen isolation by egg inoculation 04/04/2013 Positive
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE’s Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 04/04/2013 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations