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China - 1 new outbreak of highly pathogenic influenza H5N8 in domesticated black swans in Wuhan City Zoo, in Hubei Province (OIE, January 18, 2017)

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  • China - 1 new outbreak of highly pathogenic influenza H5N8 in domesticated black swans in Wuhan City Zoo, in Hubei Province (OIE, January 18, 2017)

    Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
    China (People's Rep. of)
    Information received on 18/01/2017 from Dr Zhang Zhongqui, Director General , China Animal Disease Control Centre, Veterinary Bureau, Ministry of Agriculture, Beijing, China (People's Rep. of)
    Summary
    Report type Immediate notification
    Date of start of the event 01/01/2017
    Date of confirmation of the event 16/01/2017
    Report date 18/01/2017
    Date submitted to OIE 18/01/2017
    Reason for notification New strain of a listed disease
    Manifestation of disease Clinical disease
    Causal agent Highly pathogenic influenza A virus
    Serotype H5N8
    Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced)
    This event pertains to a defined zone within the country
    New outbreaks (1)
    Outbreak 1 Wuhan, HUBEI
    Date of start of the outbreak 01/01/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Zoo
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Black Swan:Cygnus atratus(Anatidae) 314 99 99 215 0
    Affected population The affected population is a flock of domesticated black swans in Wuhan City Zoo, in Hubei Province.
    Summary of outbreaks Total outbreaks: 1
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Black Swan:Cygnus atratus(Anatidae) 314 99 99 215 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Black Swan:Cygnus atratus(Anatidae) 31.53% 31.53% 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 Local poultry was visited, no abnormal event was found.
    Control measures
    Measures applied
    • Disinfection / Disinfestation
    • Stamping out
    • Control of wildlife reservoirs
    • 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
    Harbin National Avian Influenza Reference Laboratory (OIE Reference Laboratory) Black Swan reverse transcription - polymerase chain reaction (RT-PCR) 16/01/2017 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    ...
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