Highly pathogenic avian influenza,
Information received on 18/06/2020 from Dr Damyan Iliev, Chief Veterinary Officer & Deputy Executive Director, Bulgarian Food Safety Agency, Ministry of Agriculture and Food, Sofia, Bulgaria
Report type Immediate notification
Date of start of the event 04/06/2020
Date of confirmation of the event 04/06/2020
Report date 18/06/2020
Date submitted to OIE 18/06/2020
Date event resolved 10/07/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 18/03/2020
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N8
Nature of diagnosis Laboratory (basic)
This event pertains to a defined zone within the country
Related reports Immediate notification (18/06/2020)
Follow-up report No. 1 (25/08/2020)
New outbreaks (1)
Outbreak 1 Asenovgrad, Plovdiv
Date of start of the outbreak 04/06/2020
Outbreak status Resolved (10/07/2020)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 253585 68 68 253517 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 253585 68 68 253517 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.03% 0.03% 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
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance within containment and/or protection zone
  • Screening
  • Traceability
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Control of wildlife reservoirs
  • Zoning
  • Disinfection
  • 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 04/06/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations