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Taiwan - 3 new outbreaks of highly pathogenic influenza H5N2 in birds in farms, Changhua, Yunlin (OIE, May 15, 2017)

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  • Taiwan - 3 new outbreaks of highly pathogenic influenza H5N2 in birds in farms, Changhua, Yunlin (OIE, May 15, 2017)

    Highly pathogenic avian influenza,
    Chinese Taipei
    Information received on 17/05/2017 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. 60
    Date of start of the event 07/01/2015
    Date of confirmation of the event 11/01/2015
    Report date 15/05/2017
    Date submitted to OIE 17/05/2017
    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 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)
    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)
    New outbreaks (3)
    Outbreak 1 (2017-ch-10) Dacheng Township, CHANGHUA COUNTY
    Date of start of the outbreak 03/05/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 458 0 458 0
    Affected population Ducks (2017-ch-10)
    Outbreak 2 (2017-yl-67) Dongshi Township, YUNLIN COUNTY
    Date of start of the outbreak 07/05/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 9916 27 27 9889 0
    Affected population Native chickens (2017-yl-67)
    Outbreak 3 (2017-yl-68) Dongshi Township, YUNLIN COUNTY
    Date of start of the outbreak 08/05/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 6353 16 16 6337 0
    Affected population Native chickens (2017-yl-68)
    Summary of outbreaks Total outbreaks: 3
    Total animals affected
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 16727 43 ** 43 16684 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds ** 0.26% ** 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 three poultry farms in Changhua County, and Yunlin County were sent to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. Highly pathogenic avian influenza H5N2 subtype was confirmed by the AHRI. The farms have been placed 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 a 3 km radius of the infected farm are under intensified surveillance for 3 months.
    Control measures
    Measures applied
    • Movement control inside the country
    • Screening
    • 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 10/05/2017 Positive
    Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 11/05/2017 Positive
    Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 12/05/2017 Positive
    Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 09/05/2017 Positive
    Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 10/05/2017 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    ...
    http://www.oie.int/wahis_2/public/wa...reportid=23792
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