Low pathogenic avian influenza (poultry),
China (People's Rep. of)
Information received on 26/01/2014 from Dr Yu Kangzhen, National Chief Veterinary Officer , Veterinary Bureau , Ministry of Agriculture , Beijing, China (People's Rep. of)
Summary
Report type Follow-up report No. 11
Date of start of the event 04/04/2013
Date of confirmation of the event 04/04/2013
Report date 26/01/2014
Date submitted to OIE 26/01/2014
Date event resolved 30/06/2015
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)
Follow-up report No. 18 (31/08/2015)
New outbreaks (2)
Outbreak 1 Agriculture products market, Guangzhou, Guangdong
Date of start of the outbreak 11/01/2014
Outbreak status Resolved (30/06/2015)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1200 2 0 1200 0
Affected population All 185 specimens (chicken) were collected according to the national surveillance plan and no clinical signs were found. Two specimens tested positive from Changban agriculture product market and Yijinxinjie agriculture market, respectively.
Outbreak 2 Meiling Agriculture products market, Jinjiang, Quanzhou, Fujian
Date of start of the outbreak 16/01/2014
Outbreak status Resolved (30/06/2015)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1
Affected population All 220 specimens (89 chickens, 53 pigeons, 22 ducks and 56 environment specimens) were collected according to the national surveillance plan and no clinical signs were found. One environment specimen tested positive from Meiling agriculture product market.
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1200 3 0 1200 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** ** ** **
*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
Control measures
Measures applied
  • Zoning
  • Stamping out
  • Dipping / Spraying for control of vectors or parasites
  • Disinfection / Disinfestation
  • Movement control inside the country
  • 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 veterinary research institute, Chinese academy of agricultural sciences (OIE Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 13/01/2014 Positive
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 19/01/2014 Positive
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE Reference Laboratory) Birds virus isolation 13/01/2014 Positive
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE Reference Laboratory) Birds virus isolation 19/01/2014 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations