OIE: Low pathogenic avian influenza (poultry), China

Information received on 28/02/2014 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. 13
Date of start of the event 04/04/2013
Date of pre-confirmation of the event 04/04/2013
Report date 28/02/2014
Date submitted to OIE 28/02/2014
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)
New outbreaks (2)
Outbreak 1 Gelin new city livebird market, changsha, HUNAN
Date of start of the outbreak 15/02/2014
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 138 1 0 138 0
Affected population 40 samples were collected from the live bird market (including 13 chicken samples, 12 duck samples and 15 environment samples) according to the national surveillance plan and no clinical signs were found. One chicken sample tested positive.
Outbreak 2 Chengbei livebird market, shuangfeng, loudi, HUNAN
Date of start of the outbreak 15/02/2014
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 22 1 0 22 0
Affected population 45 chicken samples were collected from the live bird market according to the national surveillance plan and no clinical signs were found. One chicken sample was tested positive.
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 160 2 0 160 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 1.25% 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
Control measures
Measures applied
  • Stamping out
  • Movement control inside the country
  • Disinfection of infected premises/establishment(s)
  • Dipping / Spraying
  • No vaccination
  • 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 veterinary research institute, Chinese academy of agricultural sciences (OIE抯 Reference Laboratory) Birds real-time PCR 18/02/2014 Positive
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE抯 Reference Laboratory) Birds virus isolation 18/02/2014 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.