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Japan - 3 new outbreaks of highly pathogenic influenza H5N6 in crows in Itami city, Hyogo (OIE, March 9, 2018)

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  • Japan - 3 new outbreaks of highly pathogenic influenza H5N6 in crows in Itami city, Hyogo (OIE, March 9, 2018)

    Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
    Japan
    Information received on 09/03/2018 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. 4
    Date of start of the event 05/11/2017
    Date of confirmation of the event 09/11/2017
    Report date 09/03/2018
    Date submitted to OIE 09/03/2018
    Reason for notification Recurrence of a listed disease
    Date of previous occurrence 08/03/2017
    Manifestation of disease Clinical disease
    Causal agent Highly pathogenic influenza A virus
    Serotype H5N6
    Nature of diagnosis Laboratory (basic), Laboratory (advanced)
    This event pertains to a defined zone within the country
    Related reports Immediate notification (10/11/2017)
    Follow-up report No. 1 (13/11/2017)
    Follow-up report No. 2 (24/11/2017)
    Follow-up report No. 3 (22/01/2018)
    Follow-up report No. 4 (09/03/2018)
    New outbreaks (3)
    Outbreak 1 Itami city, HYOGO
    Date of start of the outbreak 01/03/2018
    Outbreak status Resolved (01/03/2018)
    Epidemiological unit Not applicable
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Large-billed Crow:Corvus macrorhynchos(Corvidae) 5 5 0 0
    Outbreak 2 Itami city, HYOGO
    Date of start of the outbreak 02/03/2018
    Outbreak status Resolved (02/03/2018)
    Epidemiological unit Not applicable
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Large-billed Crow:Corvus macrorhynchos(Corvidae) 6 6 0 0
    Outbreak 3 Itami city, HYOGO
    Date of start of the outbreak 03/03/2018
    Outbreak status Resolved (03/03/2018)
    Epidemiological unit Not applicable
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Large-billed Crow:Corvus macrorhynchos(Corvidae) 1 1 0 0
    Summary of outbreaks Total outbreaks: 3
    Total animals affected
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Large-billed Crow:Corvus macrorhynchos(Corvidae) 12 12 0 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Large-billed Crow:Corvus macrorhynchos(Corvidae) ** ** 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 Large-billed crows (Corvus macrorhynchos) were found dead or weak in Itami city and tested positive for influenza A virus with rapid tests. Then confirmatory tests were carried out in Tottori University and H5N6 highly pathogenic avian influenza virus was detected in the 12 samples. The area within 10 km around the birds' collection point was designated as wild bird monitoring priority area.
    Control measures
    Measures applied
    • Screening
    • Disinfection
    • 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
    Tottori University (Private Laboratory) Large-billed Crow gene sequencing 06/03/2018 Positive
    Tottori University (Private Laboratory) Large-billed Crow gene sequencing 08/03/2018 Positive
    Tottori University (Private Laboratory) Large-billed Crow haemagglutination (HA) test 06/03/2018 Positive
    Tottori University (Private Laboratory) Large-billed Crow haemagglutination (HA) test 08/03/2018 Positive
    Tottori University (Private Laboratory) Large-billed Crow haemagglutination inhibition test (HIT) 06/03/2018 Positive
    Tottori University (Private Laboratory) Large-billed Crow haemagglutination inhibition test (HIT) 08/03/2018 Positive
    Tottori University (Private Laboratory) Large-billed Crow reverse transcription - polymerase chain reaction (RT-PCR) 06/03/2018 Positive
    Tottori University (Private Laboratory) Large-billed Crow reverse transcription - polymerase chain reaction (RT-PCR) 08/03/2018 Positive
    Tottori University (Private Laboratory) Large-billed Crow virus isolation 06/03/2018 Positive
    Tottori University (Private Laboratory) Large-billed Crow virus isolation 08/03/2018 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    ...
    http://www.oie.int/wahis_2/public/wa...reportid=26116
    "Safety and security don't just happen, they are the result of collective consensus and public investment. We owe our children, the most vulnerable citizens in our society, a life free of violence and fear."
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