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Taiwan - 1 new outbreak of highly pathogenic avian influenza H5N2 in backyard birds in Hsinchu County (OIE, September 21, 2016)

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  • Taiwan - 1 new outbreak of highly pathogenic avian influenza H5N2 in backyard birds in Hsinchu County (OIE, September 21, 2016)

    Highly pathogenic avian influenza,
    Chinese Taipei
    Information received on 21/09/2016 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 Follow-up report No. 47
    Date of start of the event 07/01/2015
    Date of confirmation of the event 11/01/2015
    Report date 21/09/2016
    Date submitted to OIE 21/09/2016
    Reason for notification Reoccurrence of a listed disease
    Date of previous occurrence 23/07/2014
    Manifestation of disease Clinical disease
    Causal agent Highly 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 (12/01/2015)
    Follow-up report No. 1 (13/01/2015)
    Follow-up report No. 2 (15/01/2015)
    Follow-up report No. 3 (16/01/2015)
    Follow-up report No. 4 (19/01/2015)
    Follow-up report No. 5 (21/01/2015)
    Follow-up report No. 6 (28/01/2015)
    Follow-up report No. 7 (04/02/2015)
    Follow-up report No. 8 (11/02/2015)
    Follow-up report No. 9 (17/02/2015)
    Follow-up report No. 10 (26/02/2015)
    Follow-up report No. 11 (04/03/2015)
    Follow-up report No. 12 (12/03/2015)
    Follow-up report No. 13 (19/03/2015)
    Follow-up report No. 14 (25/03/2015)
    Follow-up report No. 15 (02/04/2015)
    Follow-up report No. 16 (14/04/2015)
    Follow-up report No. 17 (17/04/2015)
    Follow-up report No. 18 (24/04/2015)
    Follow-up report No. 19 (01/05/2015)
    Follow-up report No. 20 (11/05/2015)
    Follow-up report No. 21 (18/05/2015)
    Follow-up report No. 22 (29/05/2015)
    Follow-up report No. 23 (04/06/2015)
    Follow-up report No. 24 (12/06/2015)
    Follow-up report No. 25 (18/06/2015)
    Follow-up report No. 26 (07/07/2015)
    Follow-up report No. 27 (13/07/2015)
    Follow-up report No. 28 (20/07/2015)
    Follow-up report No. 29 (27/07/2015)
    Follow-up report No. 30 (31/07/2015)
    Follow-up report No. 31 (11/08/2015)
    Follow-up report No. 32 (24/08/2015)
    Follow-up report No. 33 (04/09/2015)
    Follow-up report No. 34 (02/10/2015)
    Follow-up report No. 35 (21/10/2015)
    Follow-up report No. 36 (30/10/2015)
    Follow-up report No. 37 (08/12/2015)
    Follow-up report No. 38 (04/01/2016)
    Follow-up report No. 39 (15/01/2016)
    Follow-up report No. 40 (02/02/2016)
    Follow-up report No. 41 (22/02/2016)
    Follow-up report No. 42 (07/03/2016)
    Follow-up report No. 43 (11/04/2016)
    Follow-up report No. 44 (19/04/2016)
    Follow-up report No. 45 (05/05/2016)
    Follow-up report No. 46 (20/06/2016)
    Follow-up report No. 47 (21/09/2016)
    New outbreaks (1)
    Outbreak 1 (hc-2016-1) Jianshi Township, HSINCHU COUNTY
    Date of start of the outbreak 17/08/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Backyard
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 508 114 114 394 0
    Affected population Poultry (hc-2016-1)
    Summary of outbreaks Total outbreaks: 1
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 508 114 114 394 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds 22.44% 22.44% 100.00% 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 Abnormal mortality was observed in one backyard poultry farm in Hsinchu County. Samples were sent to the National Laboratory, Animal Health Research Institute (AHRI) for analysis. Highly pathogenic avian influenza H5N2 subtype was confirmed by AHRI. The farm has been put 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 within 3 km radius of the infected farm are under intensified surveillance for three months.
    Control measures
    Measures applied
    • Movement control inside the country
    • Screening
    • Disinfection / Disinfestation
    • Quarantine
    • Stamping out
    • 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 gene sequencing 21/08/2016 Positive
    Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 20/08/2016 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    ...
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