Highly pathogenic avian influenza, Hong Kong (SAR - PRC) (WAHID Interface - OIE World Animal Health Information Database, Dec. 23 2010, edited)

[Giuseppe]

Highly pathogenic avian influenza, Hong Kong (SAR - PRC) (WAHID Interface - OIE World Animal Health Information Database, Dec. 23 2010, edited)


[Source: OIE, full text: <cite cite="http://www.oie.int/wahis/public.php?page=single_report&pop=1&reportid=10085 ">WAHID Interface - OIE World Animal Health Information Database</cite>. Edited.]

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

Information received on 23/12/2010 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 (Final report)
  • Start date 18/12/2010
  • Date of first confirmation of the event 21/12/2010
  • Report date 22/12/2010
  • Date submitted to OIE 23/12/2010
  • Date event resolved 18/12/2010
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 26/03/2010
  • Manifestation of disease Clinical disease
  • Causal agent Highly pathogenic avian influenza
  • Serotype H5N1
  • Nature of diagnosis Laboratory (advanced)
  • This event pertains to the whole country

• New outbreaks
  • Outbreak 1 - Lantau Island, Sha Lo Wan, HONG KONG
    • Date of start of the outbreak 18/12/2010
    • Outbreak status Resolved (18/12/2010)
    • Epidemiological unit Not applicable
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - ... - ... - 1 - ... - ...
      • Affected Population The chicken carcass from unknown source was detected on the coast of the Lantau Island. The body was badly decomposed at the time of collection.
  • Summary of outbreaks
    • Total outbreaks: 1
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds - ** - ** - ** - **
      • * 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
  • Since the occurrence of the event, inspections of the Lantau coast and the nearby villages have been conducted, no poultry carcass was found and there was no evidence of any backyard poultry being kept there (the HKSAR government has banned backyard poultry since February 2006).
  • There was no poultry farm within three kilometres of where the carcass was found.
  • The HKSAR government will continue to monitor the situation including wild bird surveillance and local poultry farm monitoring.
  • The date of event ended is the same as the finding of the bird (i.e. 18 Dec 2010).

• 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
      • Birds - immunohistochemical test - 21/12/2010 - Positive
      • Birds - polymerase chain reaction (PCR) - 21/12/2010 - Positive
      • Birds - virus isolation - 22/12/2010 - Positive
    • Laboratory name and type Department of Microbiology, the University of Hong Kong (Regional Reference Laboratory)
      • Tests and results: Species - Test - Test date - Result
        • Birds - gene sequencing - Pending

• Future Reporting
  • The event is resolved. No more reports will be submitted.

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