Low pathogenic avian influenza (poultry), Chinese Taipei (WAHID Interface - OIE World Animal Health Information Database, 10/04/10, edited)

[Giuseppe]

Low pathogenic avian influenza (poultry), Chinese Taipei (WAHID Interface - OIE World Animal Health Information Database, 10/04/10, edited)


[Source: OIE, <cite cite="http://www.oie.int/wahis/public.php?page=single_report&pop=1&reportid=9783">WAHID Interface - OIE World Animal Health Information Database</cite>. Edited.]

Low pathogenic avian influenza (poultry), Chinese Taipei

Information received on 04/10/2010 from Dr Kwo-Ching Huang, Chief Veterinary Officer and Deputy Director General, , Bureau of Animal and Plant Health Inspection and Quarantine Council of agriculture, Executive Yuan , Taipei, Chinese Taipei

• Summary
  • Report type Immediate notification
  • Start date 20/09/2010
  • Date of first confirmation of the event 29/09/2010
  • Report date 04/10/2010
  • Date submitted to OIE 04/10/2010
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 02/04/2010
  • Manifestation of disease Sub-clinical infection
  • Causal agent Low pathogenic avian influenza virus
  • Serotype H5N2
  • Nature of diagnosis Laboratory (advanced)
  • This event pertains to a defined zone within the country

• New outbreaks
  • Outbreak 1 - Fang-Yuan Township, CHANG-HUA
    • Date of start of the outbreak 20/09/2010
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 18000 - 20 - 0 - 0 - 0

• Summary of outbreaks
  • Total outbreaks: 1
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 0.11% - 0.00% - 0.00% - 0.00%
    • * 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
  • An avian influenza virus was isolated by active surveillance sampling and confirmed as H5N2 subtype on 29 September 2010. Antibodies were also detected on those samples.
  • Movement restriction was implemented on the infected farm immediately after the confirmation was made.
  • Clinical health investigation in this farm showed that the layers were in healthy condition with normal egg production.
  • Abnormal mortality was not observed in the infected farm.
  • The clinical and epidemiological investigation of surrounding poultry farms are in progress.
  • Viral pathogenicity test is underway.
  • Note by the OIE Animal Health Information Department: H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 10.4. on avian influenza of the Terrestrial Animal Health Code (2010).

• Control measures
  • Measures applied
    • 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 Animal Health Research Institute (National laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - haemagglutination inhibition test (HIT) - 29/09/2010 - Positive
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 29/09/2010 - Positive
      • Birds - virus isolation - 29/09/2010 - Positive

• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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