Highly pathogenic avian influenza,
Information received on 24/02/2017 from Dr Damyan Iliev, Chief Veterinary Officer & Deputy Executive Director, Bulgarian Food Safety Agency, Ministry of Agriculture and Food, Sofia, Bulgaria
Report type Follow-up report No. 3
Date of start of the event 19/12/2016
Date of confirmation of the event 19/12/2016
Report date 24/02/2017
Date submitted to OIE 24/02/2017
Date event resolved 30/04/2017
Reason for notification Recurrence of a listed disease
Date of previous occurrence 01/07/2015
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N8
Nature of diagnosis Clinical, Laboratory (basic)
This event pertains to a defined zone within the country
Related reports Immediate notification (22/12/2016)
Follow-up report No. 1 (28/12/2016)
Follow-up report No. 2 (20/02/2017)
Follow-up report No. 3 (24/02/2017)
Follow-up report No. 4 (09/05/2017)
Follow-up report No. 5 (05/06/2017)
New outbreaks (1)
Outbreak 1 Zvinitsa, Kurdzhali , Kardzali
Date of start of the outbreak 22/02/2017
Outbreak status Resolved (30/04/2017)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 62 25 25 37 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 62 25 25 37 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 40.32% 40.32% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
  • Contact with wild species
Control measures
Measures applied
  • Movement control inside the country
  • Screening
  • Quarantine
  • Surveillance outside containment and/or protection zone
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Surveillance within containment and/or protection zone
  • Control of wildlife reservoirs
  • Zoning
  • 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 Reference Laboratory for Avian Influenza/Newcastle Disease (National laboratory) Birds real-time PCR 22/02/2017 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations