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Japan - 1 new outbreak of highly pathogenic avian influenza H5N6 in birds on farm in Gifu Prefecture (OIE, January 16, 2017)

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  • Japan - 1 new outbreak of highly pathogenic avian influenza H5N6 in birds on farm in Gifu Prefecture (OIE, January 16, 2017)

    Highly pathogenic avian influenza,
    Japan
    Information received on 17/01/2017 from Dr Kazuo Ito, Director, International Animal Health Affairs Office, Animal Health Division, Food Safety and Consumer Affairs Bureau, Ministry of Agriculture, Forestry and Fisheries, Tokyo, Japan
    Summary
    Report type Follow-up report No. 5
    Date of start of the event 28/11/2016
    Date of confirmation of the event 28/11/2016
    Report date 16/01/2017
    Date submitted to OIE 17/01/2017
    Reason for notification Reoccurrence of a listed disease
    Date of previous occurrence 17/02/2015
    Manifestation of disease Clinical disease
    Causal agent Highly pathogenic avian influenza virus
    Serotype H5N6
    Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced)
    This event pertains to the whole country
    Related reports Immediate notification (29/11/2016)
    Follow-up report No. 1 (05/12/2016)
    Follow-up report No. 2 (19/12/2016)
    Follow-up report No. 3 (26/12/2016)
    Follow-up report No. 4 (10/01/2017)
    Follow-up report No. 5 (16/01/2017)
    New outbreaks (1)
    Outbreak 1 Yamagata-shi, GIFU
    Date of start of the outbreak 14/01/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 78184 100 100 78084 0
    Affected population Poultry (layers)
    Summary of outbreaks Total outbreaks: 1
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 78184 100 100 78084 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds 0.13% 0.13% 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 Outbreak 5 (Hokkaido, Shimizu-cho) follow up information of the previous reports On 15 January 2017, the movement restriction was lifted since 21 days had passed without any new outbreaks after control measures including stamping out had been completed on 24 December 2016. Outbreak 6 (Miyazaki, Kawaminami-cho) follow up information of the previous reports On 12 January 2017, the movement restriction was lifted since 21 days had passed without any new outbreaks after control measures including stamping out had been completed on 21 December 2016. Outbreak 7 (Kumamoto, Nankan-machi) follow up information of the previous reports On 12 January 2017 shipment restrictions were lifted as there were not any positive results of the tests conducted after control measures including stamping out had been completed. Outbreak 8 (Gifu, Yamagata-shi) this report On 14 January 2017, the local veterinary service in Gifu Prefecture received a notification from a domestic hen farm on an increase in the number of dead birds (100 birds on the same day). The samples were sent to the laboratory of local veterinary service (Gifu Livestock Hygiene Service Centre) and the samples from dead birds were confirmed to be influenza A virus positive by antigen-capture kits and to be subtype H5 by RT-PCR and RRT-PCR in Gifu Livestock Hygiene Service Centre. Movement and shipment restrictions are imposed on the farms within a radius of 3km and 3-10 km of the affected farm, respectively. Destruction of all the susceptible birds in the affected farm has been completed and N-type was identified as N6 by NIAH on 16 January 2017.
    Control measures
    Measures applied
    • Movement control inside the country
    • Screening
    • Disinfection / Disinfestation
    • Quarantine
    • Stamping out
    • 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
    Gifu Livestock Hygiene Service Centre (Local laboratory) Birds rapid tests 14/01/2017 Positive
    Gifu Livestock Hygiene Service Centre (Local laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 14/01/2017 Positive
    Gifu Livestock Hygiene Service Centre (Local laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 14/01/2017 Positive
    National Institute of Animal Health (National laboratory) Birds gene sequencing 16/01/2017 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    ...
    http://www.oie.int/wahis_2/public/wa...reportid=22373
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