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Highly pathogenic avian influenza, Hong Kong (P.R. China) (2/13/2009) [WAHID Interface - OIE]
Highly pathogenic avian influenza, Hong Kong (P.R. China) (2/13/2009) [WAHID Interface - OIE]
Highly pathogenic avian influenza, Hong Kong (P.R. China)
Information received on 13/02/2009 from Dr Thomas Sit, Assistant Director , Inspection & Quarantine, Agriculture, Fisheries and Conservation Department, Cheung Sha Wan , Hon Kong , Hong Kong (P.R. China)
-- Summary
Report type Immediate notification
Start date 29/01/2009
Date of first confirmation of the event 31/01/2009
Report date 13/02/2009
Date submitted to OIE 13/02/2009
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 01/2009
Manifestation of disease Sub-clinical infection
Causal agent Highly pathogenic avian influenza virus Serotype H5N1
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
-- New outbreaks
- Outbreak 1 - Sha Lo Wan, HONG KONG
Date of start of the outbreak 29/01/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 2 - 2 - ...
Affected population: 1 goose and 1 duck at the coast
- Outbreak 2 - Sha Lo Wan, HONG KONG
Date of start of the outbreak 31/01/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - ...
Affected population: a duck at the coast
- Outbreak 3 - Sha Lo Wan, HONG KONG
Date of start of the outbreak 02/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - ...
Affected population: a chicken at the coast
- Outbreak 4 - Sham Wat Wan, HONG KONG
Date of start of the outbreak 02/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 2 - 2 - ...
Affected population: a chicken and a duck at the coast
- Outbreak 5 - Butterfly Beach, Tuen Mun, HONG KONG
Date of start of the outbreak 03/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - ...
Affected population: a chicken at the coast
- Outbreak 6 - San Shek Wan, HONG KONG
Date of start of the outbreak 03/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... -1 - 1 - ...
Affected population: a duck at the coast
- Outbreak 7 - Tai O, HONG KONG
Date of start of the outbreak 04/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - ...
Affected population: a chicken at the coast
- Outbreak 8 - Mai Po, HONG KONG
Date of start of the outbreak 02/02/2009
Outbreak status Resolved (02/02/2009)
Epidemiological unit Not applicable
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Wild species - ... - 1 - 1 - ...
Affected population: a grey heron at a nature reserve. The grey heron is a common winter visitor found in Hong Kong.
- Outbreak 9 - Yau Kam Tau, HONG KONG
Date of start of the outbreak 03/02/2009
Outbreak status Resolved (03/02/2009)
Epidemiological unit Not applicable
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Wild species - ... - 1 - 1 - ...
Affected population: a peregrine falcon at the coast. The peregrine falcon is a scarce resident and winter visitor found in Hong Kong.
- Outbreak 10 - Lantau Island, HONG KONG
Date of start of the outbreak 03/02/2009
Outbreak status Resolved (03/02/2009)
Epidemiological unit Not applicable
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Wild species - ... - 1 - 1 - ...
Affected population: a large-billed crow in a park. The large-billed crow is a common species found in Hong Kong.
-- Summary of outbreaks
Total outbreaks: 10
Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... -9 - 9 - ...
- Wild species - ... - 3 - 3 - ...
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
-- Epidemiological comments
An intensive surveillance system is in place on all poultry farms, poultry markets, pet bird shops, park birds and wild birds in Hong Kong.
Poultry carcasses from unknown sources were detected along the western coast of Hong Kong since 29 January 2009. Most of the carcasses were badly decomposed at the time of collection and sampling.
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.
Investigations on the source of the poultry are ongoing.
The three H5N1 positive wild birds were detected in our ongoing surveillance program on wild birds.
No spread of disease was evident.
The affected Mai Po nature reserve is closed for 21 days from 5 February 2009.
-- 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 Department of Microbiology, University de Hong Kong (National laboratory)
Tests and results: Species - Test - Test date - Result
- Birds - gene sequencing - Pending
- Birds - gene sequencing - 06/02/2009 - Positive
- Wild species - gene sequencing - Pending
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 - 31/01/2009 - Positive
- Birds - polymerase chain reaction (PCR) - 31/01/2009 - Positive
- Birds - virus isolation - 04/02/2009 - Positive
- Wild species - immunohistochemical test - 05/02/2009 - Positive
- Wild species - polymerase chain reaction (PCR) - 05/02/2009 - Positive
- Wild species - virus isolation - 07/02/2009 - Positive
-- Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
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<cite cite="http://www.oie.int/wahis/public.php?page=single_report&pop=1&reportid=7790" >WAHID Interface - OIE World Animal Health Information Database</cite>
Information received on 13/02/2009 from Dr Thomas Sit, Assistant Director , Inspection & Quarantine, Agriculture, Fisheries and Conservation Department, Cheung Sha Wan , Hon Kong , Hong Kong (P.R. China)
-- Summary
Report type Immediate notification
Start date 29/01/2009
Date of first confirmation of the event 31/01/2009
Report date 13/02/2009
Date submitted to OIE 13/02/2009
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 01/2009
Manifestation of disease Sub-clinical infection
Causal agent Highly pathogenic avian influenza virus Serotype H5N1
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
-- New outbreaks
- Outbreak 1 - Sha Lo Wan, HONG KONG
Date of start of the outbreak 29/01/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 2 - 2 - ...
Affected population: 1 goose and 1 duck at the coast
- Outbreak 2 - Sha Lo Wan, HONG KONG
Date of start of the outbreak 31/01/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - ...
Affected population: a duck at the coast
- Outbreak 3 - Sha Lo Wan, HONG KONG
Date of start of the outbreak 02/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - ...
Affected population: a chicken at the coast
- Outbreak 4 - Sham Wat Wan, HONG KONG
Date of start of the outbreak 02/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 2 - 2 - ...
Affected population: a chicken and a duck at the coast
- Outbreak 5 - Butterfly Beach, Tuen Mun, HONG KONG
Date of start of the outbreak 03/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - ...
Affected population: a chicken at the coast
- Outbreak 6 - San Shek Wan, HONG KONG
Date of start of the outbreak 03/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... -1 - 1 - ...
Affected population: a duck at the coast
- Outbreak 7 - Tai O, HONG KONG
Date of start of the outbreak 04/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... - 1 - 1 - ...
Affected population: a chicken at the coast
- Outbreak 8 - Mai Po, HONG KONG
Date of start of the outbreak 02/02/2009
Outbreak status Resolved (02/02/2009)
Epidemiological unit Not applicable
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Wild species - ... - 1 - 1 - ...
Affected population: a grey heron at a nature reserve. The grey heron is a common winter visitor found in Hong Kong.
- Outbreak 9 - Yau Kam Tau, HONG KONG
Date of start of the outbreak 03/02/2009
Outbreak status Resolved (03/02/2009)
Epidemiological unit Not applicable
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Wild species - ... - 1 - 1 - ...
Affected population: a peregrine falcon at the coast. The peregrine falcon is a scarce resident and winter visitor found in Hong Kong.
- Outbreak 10 - Lantau Island, HONG KONG
Date of start of the outbreak 03/02/2009
Outbreak status Resolved (03/02/2009)
Epidemiological unit Not applicable
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Wild species - ... - 1 - 1 - ...
Affected population: a large-billed crow in a park. The large-billed crow is a common species found in Hong Kong.
-- Summary of outbreaks
Total outbreaks: 10
Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - ... -9 - 9 - ...
- Wild species - ... - 3 - 3 - ...
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
-- Epidemiological comments
An intensive surveillance system is in place on all poultry farms, poultry markets, pet bird shops, park birds and wild birds in Hong Kong.
Poultry carcasses from unknown sources were detected along the western coast of Hong Kong since 29 January 2009. Most of the carcasses were badly decomposed at the time of collection and sampling.
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.
Investigations on the source of the poultry are ongoing.
The three H5N1 positive wild birds were detected in our ongoing surveillance program on wild birds.
No spread of disease was evident.
The affected Mai Po nature reserve is closed for 21 days from 5 February 2009.
-- 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 Department of Microbiology, University de Hong Kong (National laboratory)
Tests and results: Species - Test - Test date - Result
- Birds - gene sequencing - Pending
- Birds - gene sequencing - 06/02/2009 - Positive
- Wild species - gene sequencing - Pending
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 - 31/01/2009 - Positive
- Birds - polymerase chain reaction (PCR) - 31/01/2009 - Positive
- Birds - virus isolation - 04/02/2009 - Positive
- Wild species - immunohistochemical test - 05/02/2009 - Positive
- Wild species - polymerase chain reaction (PCR) - 05/02/2009 - Positive
- Wild species - virus isolation - 07/02/2009 - Positive
-- Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
-