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Taiwan - 4 new outbreaks of highly pathogenic avian influenza H5N2 in birds in Yunlin County and Changhua County (OIE, October 11, 2017)

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  • Taiwan - 4 new outbreaks of highly pathogenic avian influenza H5N2 in birds in Yunlin County and Changhua County (OIE, October 11, 2017)

    Highly pathogenic avian influenza,
    Chinese Taipei
    Information received on 11/10/2017 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. 75
    Date of start of the event 07/01/2015
    Date of confirmation of the event 11/01/2015
    Report date 11/10/2017
    Date submitted to OIE 11/10/2017
    Reason for notification Recurrence 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 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)
    Follow-up report No. 48 (17/10/2016)
    Follow-up report No. 49 (09/01/2017)
    Follow-up report No. 50 (06/02/2017)
    Follow-up report No. 51 (01/03/2017)
    Follow-up report No. 52 (07/03/2017)
    Follow-up report No. 53 (17/03/2017)
    Follow-up report No. 54 (20/03/2017)
    Follow-up report No. 55 (27/03/2017)
    Follow-up report No. 56 (10/04/2017)
    Follow-up report No. 57 (11/04/2017)
    Follow-up report No. 58 (01/05/2017)
    Follow-up report No. 59 (08/05/2017)
    Follow-up report No. 60 (15/05/2017)
    Follow-up report No. 61 (03/06/2017)
    Follow-up report No. 62 (07/06/2017)
    Follow-up report No. 63 (16/06/2017)
    Follow-up report No. 64 (23/06/2017)
    Follow-up report No. 65 (27/06/2017)
    Follow-up report No. 66 (03/07/2017)
    Follow-up report No. 67 (11/07/2017)
    Follow-up report No. 68 (17/07/2017)
    Follow-up report No. 69 (24/07/2017)
    Follow-up report No. 70 (31/07/2017)
    Follow-up report No. 71 (07/08/2017)
    Follow-up report No. 72 (22/08/2017)
    Follow-up report No. 73 (31/08/2017)
    Follow-up report No. 74 (05/09/2017)
    Follow-up report No. 75 (11/10/2017)
    New outbreaks (4)
    Outbreak 1 (2017-yl-w-2) Dongshi Township, YUNLIN COUNTY
    Date of start of the outbreak 09/01/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Not applicable
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 3 3 3 0 0
    Affected population Native chicken (2017-yl-w-2)
    Outbreak 2 (2017-ch-w-1) Dacheng Township, CHANGHUA COUNTY
    Date of start of the outbreak 21/02/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Not applicable
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 3 3 3 0 0
    Affected population Duck(2017-ch-w-1)
    Outbreak 3 (2017-yl-87) Taixi Township, YUNLIN COUNTY
    Date of start of the outbreak 13/09/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 2744 0 2744 0
    Affected population Duck(2017-yl-87)
    Outbreak 4 (2017-yl-88) Taixi Township, YUNLIN COUNTY
    Date of start of the outbreak 14/09/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 4589 0 4589 0
    Affected population Duck(2017-yl-88)
    Summary of outbreaks Total outbreaks: 4
    Total animals affected
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 7339 6 ** 6 7333 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds ** 0.08% ** 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 Yunlin County and Changhua County were sent to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. Highly pathogenic avian influenza H5N2 subtype was confirmed by AHRI. The infected farms have been put under movement restriction. All animals on the infected farms 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
    • Disinfection / Disinfestation
    • Screening
    • Quarantine
    • Stamping out
    • Zoning
    • Vaccination prohibited
    • No treatment of affected animals
    Measures to be applied
    • Traceability
    Diagnostic test results
    Laboratory name and type Species Test Test date Result
    Animal Health Research Institute (National laboratory) Birds gene sequencing 12/01/2017 Positive
    Animal Health Research Institute (National laboratory) Birds gene sequencing 23/02/2017 Positive
    Animal Health Research Institute (National laboratory) Birds gene sequencing 30/09/2017 Positive
    Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 11/01/2017 Positive
    Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 29/09/2017 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    ...
    http://www.oie.int/wahis_2/public/wa...reportid=24923
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