Highly pathogenic avian influenza,
Chinese Taipei
Information received on 26/02/2015 from Dr Ping-Cheng Yang, President, Agriculture Technology Research Institute, Council of Agriculture, Hsinchu City, Chinese Taipei
Summary
Report type Follow-up report No. 10
Date of start of the event 08/01/2015
Date of confirmation of the event 11/01/2015
Report date 26/02/2015
Date submitted to OIE 26/02/2015
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 H5N8
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (11/01/2015)
Follow-up report No. 1 (13/01/2015)
Follow-up report No. 2 (14/01/2015)
Follow-up report No. 3 (16/01/2015)
Follow-up report No. 4 (20/01/2015)
Follow-up report No. 5 (21/01/2015)
Follow-up report No. 6 (28/01/2015)
Follow-up report No. 7 (04/02/2015)
Follow-up report No. 8 (11/02/2015)
Follow-up report No. 9 (17/02/2015)
Follow-up report No. 10 (26/02/2015)
Follow-up report No. 11 (04/03/2015)
Follow-up report No. 12 (12/03/2015)
Follow-up report No. 13 (24/04/2015)
Follow-up report No. 14 (01/05/2015)
Follow-up report No. 15 (12/05/2015)
Follow-up report No. 16 (18/05/2015)
Follow-up report No. 17 (29/05/2015)
Follow-up report No. 18 (07/07/2015)
Follow-up report No. 19 (11/08/2015)
Follow-up report No. 20 (04/09/2015)
Follow-up report No. 21 (08/12/2015)
Follow-up report No. 22 (04/01/2016)
Follow-up report No. 23 (02/02/2016)
Follow-up report No. 24 (22/02/2016)
Follow-up report No. 25 (07/03/2016)
Follow-up report No. 26 (11/04/2016)
Follow-up report No. 27 (19/04/2016)
Follow-up report No. 28 (05/05/2016)
Follow-up report No. 29 (22/07/2016)
Follow-up report No. 30 (08/12/2016)
Follow-up report No. 31 (23/12/2016)
Follow-up report No. 32 (09/01/2017)
Follow-up report No. 33 (07/03/2017)
Follow-up report No. 34 (17/03/2017)
Follow-up report No. 35 (27/03/2017)
Follow-up report No. 36 (03/06/2017)
Follow-up report No. 37 (27/06/2017)
Follow-up report No. 38 (11/07/2017)
Follow-up report No. 39 (12/09/2017)
Follow-up report No. 40 (11/10/2017)
New outbreaks (4)
Outbreak 1 (nt5) Zhushan Township, NANTOU 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 8600 46 46 8554 0
Affected population Breeding geese (nt5)
Outbreak 2 (nt6) Zhushan Township, NANTOU 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 3400 846 846 2554 0
Affected population Breeding geese (nt6)
Outbreak 3 (yl-395) Lunbei Township, YUNLIN COUNTY
Date of start of the outbreak 16/02/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 14500 7590 7590 6910 0
Affected population Native chickens (yl-395)
Outbreak 4 (tn110) Jiangjun District, TAINAN CITY
Date of start of the outbreak 18/02/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 16000 7343 7343 8657 0
Affected population Chickens (tn110)
Summary of outbreaks Total outbreaks: 4
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 42500 15825 15825 26675 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 37.24% 37.24% 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 Abnormal mortalities were observed in 4 poultry farms in Nantou County, Yunlin County and Tainan City. Samples were sent to the National Laboratory (Animal Health Research Institute [AHRI]) for diagnosis. H5N8 subtype HPAI was confirmed by AHRI. These farms have been put under movement restrictions. 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 infected farms are under intensified surveillance for 3 months.
Control measures
Measures applied
  • Movement control inside the country
  • Screening
  • Disinfection / Disinfestation
  • Quarantine
  • Stamping out
  • 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 gene sequencing 16/02/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 20/02/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 22/02/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 15/02/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 19/02/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 21/02/2015 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations