OIE: Highly pathogenic avian influenza, China (People′s Rep. of), (Follow-up report No. 4)

Information received on 29/01/2015 from Dr Zhang Zhongqiu, 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. 4
Date of start of the event 23/08/2014
Date of pre-confirmation of the event 01/09/2014
Report date 28/01/2015
Date submitted to OIE 29/01/2015
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 04/05/2014
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N6
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (01/09/2014)
Follow-up report No. 1 (04/09/2014)
Follow-up report No. 2 (24/10/2014)
Follow-up report No. 3 (23/01/2015)
Follow-up report No. 4 (28/01/2015)
New outbreaks (1)
Outbreak 1 Farm, Changzhou , Suzhou City, JIANGSU
Date of start of the outbreak 25/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 19284 1185 582 18702 0
Affected population Geese
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 19284 1185 582 18702 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 6.14% 3.02% 49.11% 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
  • Quarantine
  • Movement control inside the country
  • Screening
  • Zoning
  • Disinfection of infected premises/establishment(s)
  • 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 reverse transcription - polymerase chain reaction (RT-PCR) 28/01/2015 Positive
Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE抯 Reference Laboratory) Birds virus isolation 28/01/2015 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.