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Taiwan - 2 new outbreaks of highly pathogenic avian influenza H5N2 in 2 poultry farms in Yunlin County and Pingtung County (OIE, July 27, 2015)

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  • Taiwan - 2 new outbreaks of highly pathogenic avian influenza H5N2 in 2 poultry farms in Yunlin County and Pingtung County (OIE, July 27, 2015)

    Highly pathogenic avian influenza,
    Chinese Taipei
    Information received on 27/07/2015 from Dr Ping-Cheng Yang, Vice President, Agriculture Technology Research Institute, Council of Agriculture, Hsinchu City, Chinese Taipei
    Summary
    Report type Follow-up report No. 29
    Date of start of the event 07/01/2015
    Date of confirmation of the event 11/01/2015
    Report date 27/07/2015
    Date submitted to OIE 27/07/2015
    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)
    New outbreaks (2)
    Outbreak 1 (yl-448) Taixi Township, YUNLIN COUNTY
    Date of start of the outbreak 13/07/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 4135 1503 1503 2632 0
    Affected population Ducks (yl-448)
    Outbreak 2 (pt-170) Wandan Township, PINGTUNG COUNTY
    Date of start of the outbreak 14/07/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 18500 5610 5610 12890 0
    Affected population Native chickens (pt-170)
    Summary of outbreaks Total outbreaks: 2
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 22635 7113 7113 15522 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds 31.42% 31.42% 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 mortalities were observed in 2 poultry farms in Yunlin County and Pingtung County. Samples were sent to the National Laboratory (AHRI) for diagnosis. H5N2 subtype HPAI was confirmed by AHRI. These 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 farms are under intensified surveillance for 3 months.
    Control measures
    Measures applied
    • Stamping out
    • Quarantine
    • Movement control inside the country
    • Screening
    • Zoning
    • Disinfection / Disinfestation
    • 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 17/07/2015 Positive
    Animal Health Research Institute (AHRI) (National laboratory) Birds gene sequencing 18/07/2015 Positive
    Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 15/07/2015 Positive
    Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 16/07/2015 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    .../

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