Low pathogenic avian influenza (poultry),
China (People's Rep. of)
Information received on 16/04/2013 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 Follow-up report No. 3
Date of start of the event 04/04/2013
Date of pre-confirmation of the event 04/04/2013
Report date 16/04/2013
Date submitted to OIE 16/04/2013
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)
New outbreaks (3)
Outbreak 1 Zhebei live bird market, Huzhou, ZHEJIANG
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 1 0 0
Outbreak 2 Qinhuai, Qinhuai, Nanjing, JIANGSU
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 1 1 0
Affected population A sample from a wild pigeon found dead by a resident who sent it to the Local Animal Disease Control Centre.
Outbreak 3 Daoxiang live bird market, Huzhou, ZHEJIANG
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 3 0 0
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 5 1 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** ** 20.00% **
*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
Epidemiological comments Gene sequencing shows that it is Low pathogenic avian influenza virus (LPAI)
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 16/04/2013 Positive
Harbin Veterinary research institute, Chinese academy of agricultural sciences (OIE’s Reference Laboratory) Birds haemagglutination inhibition test (HIT) 16/04/2013 Positive
Harbin Veterinary research institute, Chinese academy of agricultural sciences (OIE’s Reference Laboratory) Birds pathogen isolation by egg inoculation 16/04/2013 Positive
Harbin Veterinary research institute, Chinese academy of agricultural sciences (OIE’s Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 16/04/2013 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations