Highly pathogenic avian influenza,
Bhutan
Information received on 08/02/2013 from Dr Karma Dukpa, Director General, Department of Livestock, Ministry of Agriculture and Forests, THIMPHU, Bhutan
Summary
Report type Follow-up report No. 9
Date of start of the event 30/12/2011
Date of pre-confirmation of the event 08/01/2012
Report date 08/02/2013
Date submitted to OIE 08/02/2013
Date event resolved 17/04/2013
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 25/03/2010
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (09/01/2012)
Follow-up report No. 1 (17/01/2012)
Follow-up report No. 2 (18/01/2012)
Follow-up report No. 3 (01/03/2012)
Follow-up report No. 4 (02/03/2012)
Follow-up report No. 5 (09/03/2012)
Follow-up report No. 6 (20/04/2012)
Follow-up report No. 7 (25/10/2012)
Follow-up report No. 8 (11/01/2013)
Follow-up report No. 9 (08/02/2013)
Follow-up report No. 10 (15/08/2013)
Outbreaks There are no new outbreaks in this report
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
  • Illegal movement of animals
Epidemiological comments Up to 18 January 2013 a total of 76 poultry died in the affected area. Trace-back investigations revealed that there have been poultry deaths in the area from 14 January 2013 although they were not reported immediately to the local veterinary authorities. The disease was confirmed through real-time PCR at the National Veterinary Laboratory on 16 January 2013 when four carcasses were positive to tests. Subsequently, the disease was confirmed by HSADL (Bhopal, India) on 31 January 2013.
Control measures
Measures applied
  • Stamping out
  • Quarantine
  • Movement control inside the country
  • Screening
  • Disinfection of infected premises/establishment(s)
  • Dipping / Spraying
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
National Centre for Animal Health (National laboratory) Birds real-time PCR 16/01/2013 Positive
National Centre for Animal Health (National laboratory) Birds real-time PCR 17/01/2013 Positive
High Security Animal Disease Laboratory, Bhopal, India (OIE’s Reference Laboratory) Birds real-time PCR 31/01/2013 Positive
High Security Animal Disease Laboratory, Bhopal, India (OIE’s Reference Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 31/01/2013 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.