OIE: Highly pathogenic avian influenza, Bhutan

Information received on 23/03/2018 from Dr Tashi Samdup, Director General, Department of Livestock, Ministry of Agriculture and Forests, Thimphu, Bhutan
Summary
Report type Follow-up report No. 1
Date of start of the event 06/03/2018
Date of confirmation of the event 11/03/2018
Report date 23/03/2018
Date submitted to OIE 23/03/2018
Reason for notification Recurrence of a listed disease
Date of previous occurrence 16/10/2016
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
This event pertains to a defined zone within the country
Related reports Immediate notification (13/03/2018)
Follow-up report No. 1 (23/03/2018)
New outbreaks (1)
Outbreak 1 Kalapani, Kalapani, Phuntshopelri, Samtse
Date of start of the outbreak 16/03/2018
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 617 323 323 294 0
Affected population The affected population consisted of improved and local birds reared together in a farm at Kalapani village which is located close to the Indo-Bhutan border in Samtse district.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 617 323 323 294 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 52.35% 52.35% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Illegal movement of animals
Epidemiological comments The source of the outbreak is not known. Detailed epidemiological investigation is underway.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Disinfection
  • Ante and post-mortem inspections
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Quarantine
Diagnostic test results
Laboratory name and type Species Test Test date Result
National Centre for Animal Health (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 19/03/2018 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.