Taiwan - 1 new outbreak of highly pathogenic avian influenza H5 on farm in Chiayi County (OIE, November 20, 2019)

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[TD="width: *, align: left"]Highly pathogenic avian influenza,
Chinese Taipei[/TD]
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[TD]Information received on 20/11/2019 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[/TD]
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[TD]Summary

[TD="width: 10%"]Report type[/TD]
[TD="width: 30%"]Immediate notification[/TD]

[TD="width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]27/10/2019[/TD]

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

[TD="width: 10%"]Report date[/TD]
[TD="width: 30%"]20/11/2019[/TD]

[TD="width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]20/11/2019[/TD]

[TD="width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]Recurrence of a listed disease[/TD]

[TD="width: 10%"]Date of previous occurrence[/TD]
[TD="width: 30%"]11/07/2018[/TD]

[TD="width: 10%"]Manifestation of disease[/TD]
[TD="width: 30%"]Clinical disease[/TD]

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

[TD="width: 10%"]Serotype[/TD]
[TD="width: 30%"]H5[/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]

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[TD]New outbreaks (1)

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Puzi city, Chiayi County
Date of start of the outbreak	27/10/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Farm
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3000 2899 2899 101 0
Affected population	Native Chickens(2019-cy-1)

[TD="align: left"]Outbreak 1 (2019-cy-1)[/TD]

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Total outbreaks: 1
Total animals affected	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3000 2899 2899 101 0
Outbreak statistics	Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 96.63% 96.63% 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 comments

The infected animals of the farm in Chiayi County were noticed to have clinical signs and the samples were sent by the Local Animal Disease Inspection Authority (LADIA) to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. H5 subtype HPAI was confirmed by AHRI. The infected farm 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 (1 duck farm, 1 goose farm and 1 layer chicken farm) within a one-kilometer radius of the infected farm are clinically healthy and test results of HPAI are all negative.

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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 type	Species	Test	Test date	Result
Animal Health Research Institute (AHRI) (National laboratory)	Birds	gene sequencing	30/10/2019	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	29/10/2019	Positive

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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=32373