Low pathogenic avian influenza (poultry), Chinese Taipei (WAHID Interface - OIE World Animal Health Information Database, March 21 2011, edited), poul

[Giuseppe]

Low pathogenic avian influenza (poultry), Chinese Taipei (WAHID Interface - OIE World Animal Health Information Database, March 21 2011, edited)


[Source: OIE, full page: <cite cite="http://web.oie.int/wahis/public.php?page=single_report&pop=1&reportid=10385">WAHID Interface - OIE World Animal Health Information Database</cite>. Extract, edited.]

Low pathogenic avian influenza (poultry), Chinese Taipei

Information received on 21/03/2011 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 02/03/2011
  • Date of first confirmation of the event 21/03/2011
  • Report date 21/03/2011
  • Date submitted to OIE 21/03/2011
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 11/02/2011
  • 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 - Sikou Township, CHIA-I
    • Date of start of the outbreak 02/03/2011
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 4980 - 20 - 0 - 0 - 0
      • Affected Population Native chicken breeder.

• Summary of outbreaks
  • Total outbreaks: 1
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 0.40% - 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
  • The notifiable avian influenza (NAI) viral infection was detected on a native chicken breeder farm in the process of active surveillance and identified as H5N2 strain on 21 March 2011.
  • Movement restriction was implemented on the infected farm immediately after the virus was detected.
  • Clinical health investigation in the infected farm was done and showed that the breeders were in healthy condition and abnormal mortality was not observed.
  • The positive results of serological and virological tests confirm this outbreak.
  • The clinical and epidemiological investigation of surrounding poultry farms are in progress.
  • 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) - 21/03/2011 - Positive
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 21/03/2011 - Positive
      • Birds - virus isolation - 21/03/2011 - Positive

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

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[Arkanoid Legent]

Re: Low pathogenic avian influenza (poultry), Chinese Taipei (WAHID Interface - OIE World Animal Health Information Database, March 21 2011, edited), poultry, low path A/H5N2

H5N2 bird flu reported at poultry farm in southern Taiwan

An outbreak of low-pathogenic H5N2 avian influenza is unfolding at a chicken farm in Sikou township in southern Taiwan's Chiayi County, a local animal disease control official said Tuesday.

The infection was detected in an annual routine disease surveillance program, said Wong Yo-chu, director of the Animal Disease Control Center under the Chiayi county government.

No clinical symptoms were seen in any of the chickens at the black-feather stud poultry farm, Wong said.

"The holding has been confined and disinfected, " said Wong, adding that his agency has already imposed a ban on the movement of the roughly 5,000 chicken studs on the farm to prevent the virus from spreading.

The center will closely monitor the 46 other poultry farms within a 3-kilometer radius of the site for three months, Wong said.

Asked about the strain of virus detected in the poultry, Wong said the Cabinet-level Council of Agriculture has yet to finalize a complete examination report.

http://focustaiwan.tw/ShowNews/WebNews_Detail.aspx?ID=201103220007&Type=aSOC