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Taiwan - 2 new outbreaks of highly pathogenic avian influenza H5N5 in poultry in farm and slaughterhouse, Yunlin County, Taipei City (OIE, September

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 07/09/2020 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. 22[/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%"]07/09/2020[/TD]

[TD="width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]07/09/2020[/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) Follow-up report No. 19 (17/08/2020) Follow-up report No. 20 (21/08/2020) Follow-up report No. 21 (31/08/2020) Follow-up report No. 22 (07/09/2020) [/TD]
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[TD]New outbreaks (2)[/TD]
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Taixi Township, Yunlin County
Date of start of the outbreak17/08/2020
Outbreak statusContinuing (or date resolved not provided)
Epidemiological unitFarm
Affected animals
SpeciesSusceptibleCasesDeathsKilled and disposed ofSlaughtered
Birds466620046660
Affected populationMeat ducks(2020-yl-15)

[TD="align: left"]Outbreak 1 (2020-yl-15)[/TD]
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Wanhua District, Taipei City
Date of start of the outbreak23/08/2020
Outbreak statusContinuing (or date resolved not provided)
Epidemiological unitSlaughterhouse
Affected animals
SpeciesSusceptibleCasesDeathsKilled and disposed ofSlaughtered
Birds41040
Affected populationNative chickens(2020-tp-6)

[TD="align: left"]Outbreak 2 (2020-tp-6)[/TD]
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Total outbreaks: 2
Total animals affected
SpeciesSusceptibleCasesDeathsKilled and disposed ofSlaughtered
Birds467021046700
Outbreak statistics
SpeciesApparent morbidity rateApparent mortality rateApparent case fatality rateProportion susceptible animals lost*
Birds0.45%0.00%0.00%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 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 farm in Yunlin County has been placed under movement restriction. All animals on the infected farm 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. Suspected signs were observed in poultry carcasses during post-mortem inspection in the abattoir in Taipei City. Samples were sent to the AHRI for diagnosis. H5N5 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.
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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 sequencing19/08/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsgene sequencing25/08/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsgene sequencing27/08/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsreverse transcription - polymerase chain reaction (RT-PCR)18/08/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsreverse transcription - polymerase chain reaction (RT-PCR)24/08/2020Positive
Animal Health Research Institute (AHRI) (National laboratory)Birdsreverse transcription - polymerase chain reaction (RT-PCR)26/08/2020Positive
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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/...?page_refer=MapFullEventReport&reportid=35623
 
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