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Taiwan - 4 new outbreaks of highly pathogenic avian influenza H5N5 in poultry in farms, Yunlin , Changhua, Tainan (OIE, August 10, 2020)

Pathfinder

Pathfinder

Editor, Senior Moderator
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[TD="align: left"]Highly pathogenic avian influenza,
Chinese Taipei[/TD]
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[TD]Information received on 10/08/2020 from Dr Wen-Jane Tu, Chief Veterinary Officer, Director General, Bureau of Animal and Plant Health Inspection and Quarantine, Council of Agriculture, Executive Yuan, Taipei, Chinese Taipei[/TD]
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[TD]Summary

[TD="width: 10%"]Report type[/TD]
[TD="width: 30%"]Follow-up report No. 18[/TD]

[TD="width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]09/09/2019[/TD]

[TD="width: 10%"]Date of confirmation of the event[/TD]
[TD="width: 30%"]13/09/2019[/TD]

[TD="width: 10%"]Report date[/TD]
[TD="width: 30%"]10/08/2020[/TD]

[TD="width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]10/08/2020[/TD]

[TD="width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]New strain of a listed disease in the country[/TD]

[TD="width: 10%"]Causal agent[/TD]
[TD="width: 30%"]Highly pathogenic avian influenza virus[/TD]

[TD="width: 10%"]Serotype[/TD]
[TD="width: 30%"]H5N5[/TD]

[TD="width: 10%"]Nature of diagnosis[/TD]
[TD="width: 30%"]Laboratory (advanced)[/TD]

[TD="width: 10%"]This event pertains to[/TD]
[TD="width: 30%"]a defined zone within the country[/TD]

[TD="width: 10%"]Related reports[/TD]
[TD="width: 30%"] Immediate notification (23/09/2019) Follow-up report No. 1 (14/10/2019) Follow-up report No. 2 (22/11/2019) Follow-up report No. 3 (03/01/2020) Follow-up report No. 4 (06/01/2020) Follow-up report No. 5 (13/01/2020) Follow-up report No. 6 (22/01/2020) Follow-up report No. 7 (10/02/2020) Follow-up report No. 8 (20/02/2020) Follow-up report No. 9 (03/03/2020) Follow-up report No. 10 (10/03/2020) Follow-up report No. 11 (27/03/2020) Follow-up report No. 12 (07/04/2020) Follow-up report No. 13 (21/04/2020) Follow-up report No. 14 (11/05/2020) Follow-up report No. 15 (18/05/2020) Follow-up report No. 16 (01/06/2020) Follow-up report No. 17 (30/06/2020) Follow-up report No. 18 (10/08/2020) [/TD]
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[TD]New outbreaks (4)[/TD]
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Dongshi Township, Yunlin County
Date of start of the outbreak23/07/2020
Outbreak statusContinuing (or date resolved not provided)
Epidemiological unitFarm
Affected animals
SpeciesSusceptibleCasesDeathsKilled and disposed ofSlaughtered
Birds73701421142159490
Affected populationNative Chickens(2020-yl-10)

[TD="align: left"]Outbreak 1 (2020-yl-10)[/TD]
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Fangyuan Township, Changhua County
Date of start of the outbreak26/07/2020
Outbreak statusContinuing (or date resolved not provided)
Epidemiological unitFarm
Affected animals
SpeciesSusceptibleCasesDeathsKilled and disposed ofSlaughtered
Birds297390390320700
Affected populationMeat Geese (2020-ch-3)

[TD="align: left"]Outbreak 2 (2020-ch-3)[/TD]
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Xiaying District, Tainan City
Date of start of the outbreak27/07/2020
Outbreak statusContinuing (or date resolved not provided)
Epidemiological unitFarm
Affected animals
SpeciesSusceptibleCasesDeathsKilled and disposed ofSlaughtered
Birds5986019881988578720
Affected populationNative Chickens(2020-tn-7)

[TD="align: left"]Outbreak 3 (2020-tn-7)[/TD]
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Gukeng Township, Yunlin County
Date of start of the outbreak28/07/2020
Outbreak statusContinuing (or date resolved not provided)
Epidemiological unitFarm
Affected animals
SpeciesSusceptibleCasesDeathsKilled and disposed ofSlaughtered
Birds1967613991399182770
Affected populationBreeding Broilers (2020-yl-11)

[TD="align: left"]Outbreak 4 (2020-yl-11)[/TD]
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Total outbreaks: 4
Total animals affected
SpeciesSusceptibleCasesDeathsKilled and disposed ofSlaughtered
Birds8987957115711841680
Outbreak statistics
SpeciesApparent morbidity rateApparent mortality rateApparent case fatality rateProportion susceptible animals lost*
Birds6.35%6.35%100.00%100.00%

[TD="align: left"]Summary of outbreaks[/TD]

[TD="colspan: 2"]*Removed from the susceptible population through death, destruction and/or slaughter[/TD]
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[TD]Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological commentsSamples from Yunlin County, Changhua Country and Tainan City were sent to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. Highly pathogenic avian influenza H5N5 subtype was confirmed by AHRI. The infected farms in Yunlin County, Changhua Country and Tainan City has 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 farms are under intensified surveillance for three months.
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[TD]Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Traceability
  • Quarantine
  • Stamping out
  • Zoning
  • Disinfection
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
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[TD]Diagnostic test results
Laboratory name and typeSpeciesTestTest dateResult
Animal Health Research Institute (AHRI) (National laboratory)Birdsgene sequencing27/07/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsgene sequencing30/07/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsgene sequencing31/07/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsreverse transcription - polymerase chain reaction (RT-PCR)26/07/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsreverse transcription - polymerase chain reaction (RT-PCR)29/07/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsreverse transcription - polymerase chain reaction (RT-PCR)30/07/2020Positive
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[TD]Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
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https://www.oie.int/wahis_2/public/w...reportid=35309
 
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