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Highly pathogenic avian influenza, Hong Kong (SAR - PRC) (OIE, Jan 21 2011, edited)

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  • Highly pathogenic avian influenza, Hong Kong (SAR - PRC) (OIE, Jan 21 2011, edited)

    Highly pathogenic avian influenza, Hong Kong (SAR - PRC) (OIE, Jan 21 2011, edited)


    [Source: OIE, full PDF document (LINK). Edited.]

    Highly pathogenic avian influenza, Hong Kong (SAR - PRC)

    Information received on 21/01/2011 from Dr Thomas Sit, Chief Veterinary Officer / Assistant Director (Inspection & Quarantine), Agriculture, Fisheries and Conservation Department, Hong Kong Special Administrative Region Government, Hong Kong , Hong Kong (SAR - PRC)
    • Summary
      • Report type Immediate notification
      • Start date 17/01/2011
      • Date of first confirmation of the event 19/01/2011
      • Report date 21/01/2011
      • Date submitted to OIE 21/01/2011
      • Reason for notification Reoccurrence of a listed disease
      • Date of previous occurrence 18/12/2010
      • Manifestation of disease Clinical disease
      • Causal agent Highly pathogenic avian influenza virus
      • Serotype H5N1
      • Nature of diagnosis Laboratory (advanced)
      • This event pertains to the whole country

    • New outbreaks
      • Summary of outbreaks
        • Total outbreaks: 2
        • Location(s) - HONG KONG (Fairview Park, Yuen Long; Tai O, Lantau Island)
          • Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
            • Wild species - ... - 2 - 2 - 0 - 0

    • Outbreak statistics
      • Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
        • Wild species - ** - ** - 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
      • An intensive surveillance system is in place for all poultry farms, poultry markets, pet bird shops and wild birds in Hong Kong.
      • The H5N1 infected wild birds were detected in our ongoing surveillance programme on wild birds.
      • No spread of disease was evident.
      • As this report concerns wild birds, the dates of end of the outbreaks are the same as the dates on which the birds were found (17 and 18 January 2011, respectively).

    • Control measures
      • Measures applied
        • Screening
        • Disinfection of infected premises/establishment(s)
        • No vaccination
        • No treatment of affected animals
      • Measures to be applied
        • No other measures

    • Diagnostic test results
      • Laboratory name and type Tai Lung Veterinary Laboratory, Agriculture, Fisheries and Conservation Department (National laboratory)
        • Tests and results: Species - Test - Test date - Result
          • Wild species - immunohistochemical test - 19/01/2011 - Positive
          • Wild species - immunohistochemical test - 20/01/2011 - Positive
          • Wild species - polymerase chain reaction (PCR) - 19/01/2011 - Positive
          • Wild species - polymerase chain reaction (PCR) - 20/01/2011 - Positive
          • Wild species - virus isolation - 21/01/2011 - Positive
      • Laboratory name and type Department of Microbiology, University of Hong Kong (Regional Reference Laboratory)
        • Tests and results: Species - Test - Test date - Result
          • Wild species - gene sequencing - Pending

    • Future Reporting
      • The event is continuing. Weekly follow-up reports will be submitted.

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