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2024-11-23 5:58:04


OIE: Highly pathogenic avian influenza(H5N2), Chinese Taipei
submited by kickingbird at Dec, 12, 2019 13:20 PM from OIE

Information received on 10/12/2019 from Dr Wen-Jane Tu, Chief Veterinary Officer, Deputy Director General, Bureau of Animal and Plant Health Inspection and Quarantine, Council of Agriculture, Executive Yuan, Taipei, Chinese Taipei
Summary
Report type Follow-up report No. 155
Date of start of the event 07/01/2015
Date of confirmation of the event 11/01/2015
Report date 10/12/2019
Date submitted to OIE 10/12/2019
Reason for notification Recurrence of a listed disease
Date of previous occurrence 23/07/2014
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to the whole country
New outbreaks (6)
Outbreak 1 (2019-ch-16) Fangyuan Township, Changhua County
Date of start of the outbreak 07/11/2019
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 694 0 694 0
Affected population Meat Ducks (2019-ch-16)
Outbreak 2 (2019-yl-44) Dongshi Township, Yunlin County
Date of start of the outbreak 18/11/2019
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 182 0 182 0
Affected population Meat Ducks (2019-yl-44)
Outbreak 3 (2019-tp-2) Wanhua District, Taipei City
Date of start of the outbreak 21/11/2019
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Slaughterhouse
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 32 1 0 32 0
Affected population Native Chickens (2019-tp-18)
Outbreak cluster 4 (2019-yl-46) Taixi Township, Yunlin County (1 outbreaks)
Date of start of the outbreak 21/11/2019
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 5052 0 5052 0
Affected population Meat Ducks(2019-yl-46)
Outbreak 5 (2019-yl-45) Dongshi Township, Yunlin County
Date of start of the outbreak 27/11/2019
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 13270 125 125 13145 0
Affected population Native Chickens (2019-yl-45)
Outbreak 6 (2019-ch-17) Zhutang Township, Changhua County
Date of start of the outbreak 27/11/2019
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 26111 1131 1131 24980 0
Affected population Native Chickens (2019-ch-17)
Summary of outbreaks Total outbreaks: 6
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 45341 1257 ** 1256 44085 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** 2.77% ** 100.00%
*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
Epidemiological comments Samples from Yunlin County and Changhua County were sent to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. Highly pathogenic avian influenza H5N2 subtype was confirmed by AHRI. The infected farms have been placed under movement restriction. All animals on the infected farms have been culled. Thorough cleaning and disinfection have been conducted after stamping out operation. Surrounding poultry farms within 3 km radius of the infected farm are under intensified surveillance for three months. In the case of Taipei city, suspected signs were observed in poultry carcasses during post-mortem inspection in one abattoir. Samples were sent to the AHRI for diagnosis. H5N2 subtype HPAI was confirmed by the AHRI. The carcasses were destroyed and thorough cleaning and disinfection have been conducted in the abattoir. After tracing back to the farm of origin, any positive results will be included in follow-up reports.
Control measures
Measures applied
  • Movement control inside the country
  • Disinfection / Disinfestation
  • Screening
  • Traceability
  • Quarantine
  • Surveillance outside containment and/or protection zone
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Surveillance within containment and/or protection zone
  • 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 (AHRI) (National laboratory) Birds gene sequencing 11/11/2019 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 21/11/2019 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 23/11/2019 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 30/11/2019 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 20/11/2019 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 22/11/2019 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 29/11/2019 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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