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2024-11-23 8:54:50


OIE: Low pathogenic avian influenza (poultry), Chinese Taipei
submited by kickingbird at Sep, 28, 2018 8:58 AM from OIE

Information received on 27/09/2018 from Dr Tai-Hwa Shih, Chief Veterinary Officer, Deputy Director General, Bureau of Animal and Plant Health Inspection and Quarantine Council of Agriculture Executive Yuan, Ministry of Agriculture, Taipei, Chinese Taipei
Summary
Report type Follow-up report No. 8
Date of start of the event 12/01/2015
Date of confirmation of the event 14/01/2015
Report date 26/09/2018
Date submitted to OIE 27/09/2018
Reason for notification Recurrence of a listed disease
Date of previous occurrence 2014
Manifestation of disease Clinical disease
Causal agent Low pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (22/04/2015)
Follow-up report No. 1 (12/05/2015)
Follow-up report No. 2 (27/07/2015)
Follow-up report No. 3 (23/11/2015)
Follow-up report No. 4 (03/03/2016)
Follow-up report No. 5 (01/05/2017)
Follow-up report No. 6 (16/06/2017)
Follow-up report No. 7 (26/07/2018)
Follow-up report No. 8 (26/09/2018)
New outbreaks (6)
Outbreak 1 (2015-cy) Puzi City, Chiayi County
Date of start of the outbreak 13/02/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 15430 3000 3000 12430 0
Affected population Native chickens(2015-cy)
Outbreak 2 (2015-yl) Dongshi Township, Yunlin County
Date of start of the outbreak 17/06/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 13000 0 0 0
Affected population Native chickens(2015-yl)
Outbreak 3 (2017-yl-2) Xiluo Township, Yunlin County
Date of start of the outbreak 17/02/2017
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 54000 0 0 0
Affected population Native chickens(2017-yl-2)
Outbreak 4 (2017-yl-3) Dongshi Township, Yunlin County
Date of start of the outbreak 22/03/2017
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 11500 1030 1030 0 0
Affected population Native chickens(2017-yl-3)
Outbreak 5 (2017-pt-1) Jiuru Township, Pingtung County
Date of start of the outbreak 05/04/2017
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 6000 0 0 0
Affected population Layer hens(2017-pt-1)
Outbreak 6 (2017-pt-2) Fangliao Township, Pingtung County
Date of start of the outbreak 13/04/2017
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 35000 0 0 0
Affected population Layer hens(2017-pt-2)
Summary of outbreaks Total outbreaks: 6
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 134930 4030 ** 4030 12430 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** 2.99% ** 12.20%
*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
Epidemiological comments When we performed active surveillance program, samples were collected from 6 poultry farms in Chiayi County, Yunlin County and Pingtung County. Samples were sent to the national Laboratory, the Animal Health Research Institute (AHRI) for diagnosis. H5N2 subtype low pathogenic avian influenza (LPAI) was confirmed by AHRI. These farms were put under movement restrictions. The pathogenicity of the virus was subsequently confirmed by the AHRI as low pathogenic (less than 75% mortality of the tested chickens) on 17 September 2018. Surrounding poultry farms within 3 km radius of the infected farms were placed under intensified surveillance for 3 months.
Control measures
Measures applied
  • Movement control inside the country
  • Screening
  • Quarantine
  • Zoning
  • 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
Animal Health Research Institute (National laboratory) Birds gene sequencing 16/02/2015 Positive
Animal Health Research Institute (National laboratory) Birds gene sequencing 26/06/2015 Positive
Animal Health Research Institute (National laboratory) Birds gene sequencing 20/02/2017 Positive
Animal Health Research Institute (National laboratory) Birds gene sequencing 26/03/2017 Positive
Animal Health Research Institute (National laboratory) Birds gene sequencing 09/04/2017 Positive
Animal Health Research Institute (National laboratory) Birds gene sequencing 20/04/2017 Positive
Animal Health Research Institute (National laboratory) Birds inoculation test 17/09/2018 Negative
Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 22/06/2015 Positive
Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 19/02/2017 Positive
Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 25/03/2017 Positive
Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 08/04/2017 Positive
Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 19/04/2017 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
See Also: Latest news in those days:

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