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OIE: Highly pathogenic avian influenza, Chinese Taipei, (Follow-up report No. 3)
submited by kickingbird at Feb, 1, 2015 14:16 PM from OIE

Information received on 28/01/2015 from Dr Ping-Cheng Yang, Vice President, Agriculture Technology Research Institute, Council of Agriculture, Hsinchu City, Chinese Taipei
Summary
Report type Follow-up report No. 3
Date of start of the event 11/01/2015
Date of pre-confirmation of the event 13/01/2015
Report date 28/01/2015
Date submitted to OIE 28/01/2015
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 23/07/2014
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N3
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (16/01/2015)
Follow-up report No. 1 (19/01/2015)
Follow-up report No. 2 (21/01/2015)
Follow-up report No. 3 (28/01/2015)
New outbreaks (3)
Outbreak 1 (pt19) Wandan Township, PINGTUNG COUNTY
Date of start of the outbreak 12/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 2400 1811 1811 589 0
Affected population H5N2 HPAI virus was also detected on this goose farm
Outbreak 2 (pt48) Wandan Township, PINGTUNG COUNTY
Date of start of the outbreak 14/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 7500 2400 2400
Affected population H5N2 HPAI virus was also detected on this goose farm
Outbreak 3 (pt96) Wandan Township, PINGTUNG COUNTY
Date of start of the outbreak 22/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 1300 100 100
Affected population Geese
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 11200 4311 4311 589 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 38.49% 38.49% 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 Abnormal mortalities were observed in three goose farms in Ping-Tung County. Samples were sent to the National Laboratory (AHRI) for diagnosis. H5N3 subtype HPAI was confirmed by AHRI on these farms. Among three farms, H5N2 subtype HPAI virus was also detected on two farms. The farms have been put under movement restrictions. All animals on the infected farms will be culled. The actual numbers of culled animals will be available when stamping out operation is finished and be reported in the next follow-up report. Thorough cleaning and disinfection will be 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
  • Stamping out
  • Quarantine
  • Movement control inside the country
  • Screening
  • Zoning
  • Disinfection of infected premises/establishment(s)
  • 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 16/01/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 18/01/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 25/01/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 15/01/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 17/01/2015 Positive
Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 24/01/2015 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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