Low pathogenic avian influenza (poultry),
China (People's Rep. of)
Information received on 16/01/2014 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. 10
Date of start of the event 04/04/2013
Date of confirmation of the event 04/04/2013
Report date 16/01/2014
Date submitted to OIE 16/01/2014
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
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, Anji, Huzhou, Zhejiang
Date of start of the outbreak 08/12/2013
Outbreak status Resolved (30/06/2015)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2310 18 0 2310 0
Affected population All specimens were collected according to the national surveillance plan and no clinical signs were found: 8 specimens from Sanliting Agriculture Products Market (6 oral/cloacal swabs, 2 environmental faecal swabs); 3 specimens from Central Agriculture Products Market (2 oral/cloacal swabs, 1 environmental faecal swab); 1 specimen (oral/cloacal swab) from Fenghuangshan Agriculture Products Market and 6 specimens from Guoqing Poultry Wholesale Market (3 oral/cloacal swabs, 3 environmental faecal swabs).
Outbreak 2 Agriculture products market, Yangjiang, Guangdong
Date of start of the outbreak 18/12/2013
Outbreak status Resolved (30/06/2015)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2 0
Affected population All specimens were collected according to the national surveillance plan and no clinical signs were found: 1 specimen (oral/cloacal swab) from Muai Agriculture Products Market; 1 specimen (oral/cloacal swab) from Yuhuan Agriculture Products Market.
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2310 20 0 2310 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
Control measures
Measures applied
  • Movement control inside the country
  • Disinfection / Disinfestation
  • Dipping / Spraying for control of vectors or parasites
  • Stamping out
  • Zoning
  • 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) 21/12/2013 Positive
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE Reference Laboratory) Birds virus isolation 21/12/2013 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations