OIE: Highly pathogenic avian influenza, China (People´s Rep. of)

Information received on 22/07/2015 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. 6
Date of start of the event 12/09/2014
Date of confirmation of the event 15/09/2014
Report date 22/07/2015
Date submitted to OIE 22/07/2015
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 01/05/2014
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (24/10/2014)
Follow-up report No. 1 (09/01/2015)
Follow-up report No. 2 (16/01/2015)
Follow-up report No. 3 (01/04/2015)
Follow-up report No. 4 (19/06/2015)
Follow-up report No. 5 (17/07/2015)
Follow-up report No. 6 (22/07/2015)
New outbreaks (2)
Outbreak 1 Galongcuo bird island, Anduo, Naqu, TIBET
Date of start of the outbreak 11/05/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Bar-headed Goose:Anser indicus(Anatidae) 415 0 0
Affected population There were 415 wild birds dead, including brown-headed gulls and bar-headed geese.
Outbreak 2 Shuangheer wetland, Kezuohouqi, Tongliao, INNER MONGOLIA
Date of start of the outbreak 11/05/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Natural park
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Black-necked Grebe:Podiceps nigricollis(Podicipedidae) 300 0 0
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Bar-headed Goose:Anser indicus(Anatidae) ** 415 0 0
Black-necked Grebe:Podiceps nigricollis(Podicipedidae) ** 300 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Bar-headed Goose:Anser indicus(Anatidae) ** ** ** **
Black-necked Grebe:Podiceps nigricollis(Podicipedidae) ** ** ** **
*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
  • Vaccination prohibited
  • 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) Bar-headed Goose reverse transcription - polymerase chain reaction (RT-PCR) 29/05/2015 Positive
Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (OIE Reference Laboratory) Bar-headed Goose virus isolation 29/05/2015 Positive
Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (OIE Reference Laboratory) Black-necked Grebe reverse transcription - polymerase chain reaction (RT-PCR) 29/05/2015 Positive
Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (OIE Reference Laboratory) Black-necked Grebe virus isolation 29/05/2015 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.