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Taiwan - 2 new outbreaks of low pathogenic avian influenza H5N2 in birds in farms, Pingtung, Yunlin (OIE, July 08, 2019)

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  • Taiwan - 2 new outbreaks of low pathogenic avian influenza H5N2 in birds in farms, Pingtung, Yunlin (OIE, July 08, 2019)

    Low pathogenic avian influenza (poultry),
    Chinese Taipei
    Information received on 08/07/2019 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
    Summary
    Report type Follow-up report No. 10
    Date of start of the event 12/01/2015
    Date of confirmation of the event 14/01/2015
    Report date 08/07/2019
    Date submitted to OIE 08/07/2019
    Reason for notification Recurrence of a listed disease
    Date of previous occurrence 2014
    Manifestation of disease Clinical disease
    Causal agent Low pathogenic avian influenza virus
    Serotype H5N2
    Nature of diagnosis Clinical, Laboratory (advanced)
    This event pertains to a defined zone within the country
    Related reports Immediate notification (22/04/2015)
    Follow-up report No. 1 (12/05/2015)
    Follow-up report No. 2 (27/07/2015)
    Follow-up report No. 3 (23/11/2015)
    Follow-up report No. 4 (03/03/2016)
    Follow-up report No. 5 (01/05/2017)
    Follow-up report No. 6 (16/06/2017)
    Follow-up report No. 7 (26/07/2018)
    Follow-up report No. 8 (26/09/2018)
    Follow-up report No. 9 (13/05/2019)
    Follow-up report No. 10 (08/07/2019)
    New outbreaks (2)
    Outbreak 1 (2017-pt-4) Fangliao Township, Pingtung County
    Date of start of the outbreak 13/04/2017
    Outbreak status Resolved (20/07/2018)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 35000 0 0 35000
    Affected population Layer Hens(2017-pt-4)
    Outbreak 2 (2017-yl-5) Yuanchang Township, Yunlin County
    Date of start of the outbreak 08/12/2017
    Outbreak status Resolved (20/07/2018)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 9564 64 0 9500
    Affected population Native Chickens(2017-yl-5)
    Summary of outbreaks Total outbreaks: 2
    Total animals affected
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 44564 ** 64 0 44500
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds ** 0.14% ** 100.00%
    *Removed from the susceptible population through death, destruction and/or slaughter
    **Not calculated because of missing information
    Epidemiology
    Source of the outbreak(s) or origin of infection
    • Unknown or inconclusive
    Epidemiological comments Samples from Pingtung County and Yunlin County were sent to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. H5N2 subtype avian influenza was confirmed by AHRI. The infected farms were placed under movement restrictions. The pathogenicity of the virus was subsequently confirmed by the AHRI as low pathogenic (less than 75% mortality of the tested chickens) on 27 June 2019. Surrounding poultry farms within 3 km radius of the infected farms were placed under intensified surveillance for three months.
    Control measures
    Measures applied
    • Movement control inside the country
    • Screening
    • Quarantine
    • Zoning
    • Vaccination prohibited
    • No treatment of affected animals
    Measures to be applied
    • No other measures
    Diagnostic test results
    Laboratory name and type Species Test Test date Result
    Animal Health Research Institute (AHRI) (National laboratory) Birds inoculation test 27/06/2019 Negative
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    ...
    "Safety and security don't just happen, they are the result of collective consensus and public investment. We owe our children, the most vulnerable citizens in our society, a life free of violence and fear."
    -Nelson Mandela
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