Highly pathogenic avian influenza,
Hong Kong (SAR - PRC)
Information received on 09/12/2016 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 30/11/2016
Date of confirmation of the event 08/12/2016
Report date 09/12/2016
Date submitted to OIE 09/12/2016
Date event resolved 30/11/2016
Reason for notification Recurrence of a listed disease
Date of previous occurrence 25/11/2016
Manifestation of disease Sub-clinical infection
Causal agent Highly pathogenic avian influenza virus
Serotype H5N6
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (09/12/2016)
Follow-up report No. 1 (14/12/2016)
Follow-up report No. 2 (24/04/2017)
New outbreaks (1)
Outbreak 1 Mai Po, Yuen Long, Hong Kong
Date of start of the outbreak 30/11/2016
Outbreak status Resolved (30/11/2016)
Epidemiological unit Natural park
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Northern Pintail:Anas acuta(Anatidae) 1 0 0 0
Affected population A faecal environmental sample
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Northern Pintail:Anas acuta(Anatidae) 1 0 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Northern Pintail:Anas acuta(Anatidae) ** ** 0.00% **
*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 avian influenza virus including screening at Mai Po Nature Reserve in Hong Kong. A faecal environmental sample was collected for the routine academic surveillance study by the University of Hong Kong on 30 November 2016 and subsequently tested positive for H5N6. The location was the same as the three H5N6 positive samples collected on 25 November 2016.
Control measures
Measures applied
  • Screening
  • 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
Centre of Influenza Research, School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong (Regional Reference Laboratory) Unidentified gene sequencing 08/12/2016 Positive
Centre of Influenza Research, School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong (Regional Reference Laboratory) Unidentified virus isolation 05/12/2016 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations