Low pathogenic avian influenza (poultry),
Chinese Taipei
Information received on 03/01/2020 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. 11
Date of start of the event 12/01/2015
Date of confirmation of the event 14/01/2015
Report date 03/01/2020
Date submitted to OIE 03/01/2020
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)
Follow-up report No. 9 (13/05/2019)
Follow-up report No. 10 (08/07/2019)
Follow-up report No. 11 (03/01/2020)
New outbreaks (2)
Outbreak 1 (2019-ty-1) Dayuan District, Taoyuan City
Date of start of the outbreak 23/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 22000 1000 1000 21000 0
Affected population Chickens (2019-ty-1)
Outbreak 2 (2019-cy-2) Dongshi Township, Chiayi County
Date of start of the outbreak 24/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 36295 930 930 35365 0
Affected population Chickens (2019-cy-2)
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 58295 1930 1930 56365 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 3.31% 3.31% 100.00% 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
Epidemiological comments Samples from Chiayi County and Taoyuan City were sent to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. H5N2 subtype avian influenza was confirmed by AHRI. The infected farms were placed 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 December 2019. Surrounding poultry farms within 3 km radius of the infected farms were placed under intensified surveillance for three 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 (AHRI) (National laboratory) Birds inoculation test 17/12/2019 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations