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2024-3-29 4:56:48


OIE: Highly pathogenic avian influenza, Chinese Taipei
submited by kickingbird at Aug, 14, 2018 9:27 AM from OIE

Information received on 13/08/2018 from Dr Tai-Hwa Shih, Chief Veterinary Officer, Deputy Director General, Bureau of Animal and Plant Health Inspection and Quarantine Council of Agriculture Executive Yuan, Ministry of Agriculture, Taipei, Chinese Taipei

Summary

Report type

Immediate notification

Date of start of the event

12/01/2018

Date of confirmation of the event

17/01/2018

Report date

13/08/2018

Date submitted to OIE

13/08/2018

Reason for notification

Recurrence of a listed disease

Date of previous occurrence

2018

Manifestation of disease

Clinical disease

Causal agent

Highly pathogenic avian influenza virus

Serotype

H5

Nature of diagnosis

Clinical, Laboratory (basic), Laboratory (advanced)

This event pertains to

a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 4

Outbreak Location

  • Pingtung County ( Jiadong Township )
  • Yunlin County ( Xiluo Township Huwei Township Citong Township )

Total animals affected

Species

Susceptible

Cases

Deaths

Killed and disposed of

Slaughtered

Birds

60591

230 **

230

60361

0

Outbreak statistics

Species

Apparent morbidity rate

Apparent mortality rate

Apparent case fatality rate

Proportion susceptible animals lost*

Birds

**

0.38%

**

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

One layer farm in Pingtung County, one layer farm and one duck farm in Yunlin County were sampled by the local Livestock Disease Control Centre (LDCC) in the process of intensified surveillance around infected holdings. Another chicken farm in Yunlin County was reported by the owner and was sampled by the LDCC. These samples had been sent to the National Laboratory, Animal Health Research Institute (AHRI) for analysis. Highly pathogenic avian influenza H5 subtype was confirmed by AHRI on 17 January, 10 February, 8 July and 20 April in 2018. These farms have been placed under movement restriction. All animals in these infected farms have been culled. Thorough cleaning and disinfection have been conducted after stamping out operation. Surrounding poultry farms within a three-kilometer radius of the infected farms are under intensified surveillance for three months.

Control measures

Measures applied

  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Quarantine
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Disinfection
  • Ante and post-mortem inspections
  • Vaccination prohibited
  • No treatment of affected animals

Measures to be applied

  • No other measures

Diagnostic test results

Laboratory name and type

Animal Health Research Institute ( National laboratory )

Tests and results

Species

Test

Test date

Result

Birds

reverse transcription - polymerase chain reaction (RT-PCR)

17/01/2018

Positive

Birds

reverse transcription - polymerase chain reaction (RT-PCR)

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