Low pathogenic avian influenza (poultry),
China (People's Rep. of)
Information received on 05/05/2013 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. 7
Date of start of the event 04/04/2013
Date of pre-confirmation of the event 04/04/2013
Report date 05/05/2013
Date submitted to OIE 05/05/2013
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 (3)
Outbreak 1 Xiangtang market, Nanchang, Nanchang, JIANGXI
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 0
Affected population 1 sample from chicken
Outbreak 2 Sanniao live bird wholesale market, Dongcheng, Dongguan, GUANGDONG
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 89864 0
Affected population 1 sample from chicken
Outbreak 3 Xinfulu live bird market, Shizhong, Zaozhuang, SHANDONG
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 0
Affected population 3 samples from enviroment
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 5 0 89864 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** ** 0.00% **
*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 (national reference laboratory for avian influenza) (OIE’s Reference Laboratory) Birds gene sequencing 26/04/2013 Positive
Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (national reference laboratory for avian influenza) (OIE’s Reference Laboratory) Birds haemagglutination inhibition test (HIT) 26/04/2013 Positive
Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (national reference laboratory for avian influenza) (OIE’s Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 26/04/2013 Positive
Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (national reference laboratory for avian influenza) (OIE’s Reference Laboratory) Birds virus isolation 26/04/2013 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations