Highly pathogenic avian influenza,
Information received on 11/04/2019 from Dr Tashi Samdup, Director General, Department of Livestock, Ministry of Agriculture and Forests, Thimphu, Bhutan
Report type Immediate notification
Date of start of the event 06/04/2019
Date of confirmation of the event 08/04/2019
Report date 11/04/2019
Date submitted to OIE 11/04/2019
Date event resolved 03/06/2019
Reason for notification Recurrence of a listed disease
Date of previous occurrence 08/08/2018
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 (11/04/2019)
Follow-up report No. 1 (03/06/2019)
New outbreaks (1)
Outbreak 1 (BHT_HPAI_2019_002) Dhamdara, Dhamdara, Phuentsholing, Chhukha
Date of start of the outbreak 06/04/2019
Outbreak status Resolved (03/06/2019)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2000 264 264 1359 0
Affected population Another 2000 poultry birds which are at high risk of infection will be culled and disposed of today (11/04/2019).
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2000 264 264 1359 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 13.20% 13.20% 100.00% 81.15%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments Outbreak occurred in a backyard and semi-commercial poultry farm located close to Indian border town - Jaigoan, West Bengal state.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Screening
  • Traceability
  • Quarantine
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Zoning
  • Disinfection
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Stamping out
Diagnostic test results
Laboratory name and type Species Test Test date Result
National Centre for Animal Health (National laboratory) Birds rapid tests 08/04/2019 Positive
National Centre for Animal Health (National laboratory) Birds real-time PCR 08/04/2019 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations