Highly pathogenic avian influenza, Hong Kong (SAR - PRC) (WAHID Interface - OIE World Animal Health Information Database, Jan 28 2011, edited)
[Source: OIE, full text: <cite cite="http://web.oie.int/wahis/public.php?page=single_report&pop=1&reportid=10192 ">WAHID Interface - OIE World Animal Health Information Database</cite>. Edited.]
Highly pathogenic avian influenza, Hong Kong (SAR - PRC)
Information received on 28/01/2011 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)
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[Source: OIE, full text: <cite cite="http://web.oie.int/wahis/public.php?page=single_report&pop=1&reportid=10192 ">WAHID Interface - OIE World Animal Health Information Database</cite>. Edited.]
Highly pathogenic avian influenza, Hong Kong (SAR - PRC)
Information received on 28/01/2011 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 Follow-up report No. 1
- Start date 17/01/2011
- Date of first confirmation of the event 19/01/2011
- Report date 28/01/2011
- Date submitted to OIE 28/01/2011
- 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
- Related reports
- Immediate notification (21/01/2011)
- Follow-up report No. 1 (28/01/2011)
- New outbreaks
- Outbreak 1 - Tai O, Lantau Island, HONG KONG
- Date of start of the outbreak 25/01/2011
- Outbreak status Resolved (25/01/2011)
- Epidemiological unit Not applicable
- Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - 0 - 0
- Affected Population A chicken carcass from unknown source was collected on 25 January 2011 at the shore of Tai O.
- The carcass was badly decomposed at the time of collection.
- Outbreak 2 - South Perimeter Road, Lantau Island, HONG KONG
- Date of start of the outbreak 24/01/2011
- Outbreak status Resolved (24/01/2011)
- Epidemiological unit Not applicable
- Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Wild species - ...- 1 - 1 - 0 - 0
- Affected Population A Black-headed Gull (Chroicocephalus ridibundus) carcass was collected on 24 January 2011 at South Perimeter Road.
- The bird is a common winter visitor (November to April) in Hong Kong.
- Outbreak 1 - Tai O, Lantau Island, HONG KONG
- Summary of outbreaks
- Total outbreaks: 2
- Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - 0 - 0
- Wild species - ... - 1 - 1 - 0 - 0
- Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds - ** - ** - 100.00% - **
- 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
- Source of the outbreak(s) or origin of infection
- Epidemiological comments
- An intensive surveillance system is in place for all poultry farms, poultry markets, pet bird shops, park birds and wild birds in Hong Kong.
- Since February 2006, the HKSAR Government has banned backyard poultry farming and daily rural patrols throughout the territory have been put in place since then; this activity has been enhanced since the occurrence of the event.
- No poultry farm or backyard poultry farming activities were detected within the 3-km-radius affected zones.
- The monitoring on local poultry farms was also enhanced and no irregularity was detected.
- The HKSAR government will continue to monitor the situation including wild bird surveillance and local poultry farm monitoring.
- No spread of disease was evident.
- 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
- Measures applied
- Diagnostic test results
- Laboratory name and type Tai Lung Veterianry Laboratory, Agriculture, Fisheries and Conservation Department (National laboratory)
- Tests and results: Species - Test - Test date - Result
- Birds - virus isolation - 28/01/2011 - Positive
- Tests and results: Species - Test - Test date - Result
- 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 - 26/01/2011 - Positive
- Wild species - polymerase chain reaction (PCR) - 26/01/2011 - Positive
- Wild species - virus isolation - 28/01/2011 - Positive
- Tests and results: Species - Test - Test date - Result
- Laboratory name and type Tai Lung Veterianry Laboratory, Agriculture, Fisheries and Conservation Department (National laboratory)
- Future Reporting
- The event is continuing. Weekly follow-up reports will be submitted.
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