Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
Hong Kong (SAR - PRC)
Information received on 16/04/2018 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 07/04/2018
Date of confirmation of the event 12/04/2018
Report date 15/04/2018
Date submitted to OIE 16/04/2018
Reason for notification Recurrence of a listed disease
Date of previous occurrence 04/04/2018
Manifestation of disease Sub-clinical infection
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 Yuen Po Street Bird Garden, Mong Kok, Yau Tsim Mong District, Hong Kong
Date of start of the outbreak 07/04/2018
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2834 1 0 2834 0
Affected population A sample collected from a bird cage holding Hill Mynas in a pet bird shop on 7 April 2018 tested positive for H5N6 highly pathogenic avian influenza (HPAI) virus.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2834 1 0 2834 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.04% 0.00% 0.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments An avian influenza intensive surveillance system is in place for all poultry farms, poultry markets, and pet bird shops in Hong Kong. A sample collected from a pet bird shop during routine surveillance on 7 April 2018 tested positive for H5N6 highly pathogenic influenza A virus. A total of 2,834 pet birds were removed from the shop, culled and disposed of on 13 April 2018. The Yuen Po Street Bird Garden where the pet bird shop was located will be closed for 21 days. No spread of disease is evident. Neither the Hong Kong Wetland Park nor Mai Po Nature Reserve nor any poultry farms are located within three kilometres of the outbreak location.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Screening
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Zoning
  • 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) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 12/04/2018 Positive
Tai Lung Veterinary Laboratory, Agriculture, Fisheries & Conservation Department (National laboratory) Birds virus isolation 12/04/2018 Positive
Centre of Influenza Research, School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong (Regional Reference Laboratory) Birds gene sequencing Pending
National Influenza Centre, Centre for Health Protection, Department of Health (Regional Reference Laboratory) Birds gene sequencing Pending
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations