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2018-9-25 2:27:32


OIE: Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds), Hong Kong (SAR - PRC)
submited by kickingbird at Apr, 9, 2018 23:40 PM from OIE

Information received on 09/04/2018 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
Date of start of the event 04/04/2018
Date of confirmation of the event 09/04/2018
Report date 09/04/2018
Date submitted to OIE 09/04/2018
Reason for notification Recurrence of a listed disease
Date of previous occurrence 07/02/2018
Manifestation of disease Clinical disease
Causal agent Highly pathogenic influenza A virus
Serotype H5N6
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
New outbreaks (1)
Outbreak 1 (18-04269) Kun Lung Wai, Fanling, North District, Hong Kong
Date of start of the outbreak 04/04/2018
Outbreak status Resolved (04/04/2018)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Crested Myna:Acridotheres cristatellus(Sturnidae) 1 1 0 0
Affected population A dead crested myna was collected on 4 April 2018 in Kun Lung Wai, Fanling. It is a common resident species in Hong Kong.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Crested Myna:Acridotheres cristatellus(Sturnidae) 1 1 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Crested Myna:Acridotheres cristatellus(Sturnidae) ** ** 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, and pet bird shops in Hong Kong. The H5N6 infected wild bird was detected in the ongoing national surveillance program in wild birds. No spread of disease was evident. There are no poultry farms located within three kilometres of where the bird was found. The Hong Kong Wetland Park and Mai Po Nature Reserve are not located within three kilometres of where the bird was found. The date of end of the outbreak is the same as the date the bird was found (4 April 2018).
Control measures
Measures applied
  • Screening
  • Disinfection
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Tai Lung Veterinary Laboratory, Agriculture, Fisheries & Conservation Department (National laboratory) Crested Myna immunohistochemical test 06/04/2018 Positive
Tai Lung Veterinary Laboratory, Agriculture, Fisheries & Conservation Department (National laboratory) Crested Myna real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 06/04/2018 Positive
Tai Lung Veterinary Laboratory, Agriculture, Fisheries & Conservation Department (National laboratory) Crested Myna virus isolation 09/04/2018 Positive
Centre of Influenza Research, School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong (Regional Reference Laboratory) Crested Myna gene sequencing Pending
National Influenza Centre, Centre for Health Protection, Department of Health (Regional Reference Laboratory) Crested Myna gene sequencing Pending
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
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