Highly pathogenic avian influenza,
Bulgaria
Information received on 15/04/2020 from Dr Damyan Iliev, Chief Veterinary Officer & Deputy Executive Director, Bulgarian Food Safety Agency, Ministry of Agriculture and Food, Sofia, Bulgaria
Summary
Report type Follow-up report No. 5
Date of start of the event 17/02/2020
Date of confirmation of the event 17/02/2020
Report date 15/04/2020
Date submitted to OIE 15/04/2020
Date event resolved 18/03/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 05/04/2019
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 (17/02/2020)
Follow-up report No. 1 (24/02/2020)
Follow-up report No. 2 (03/03/2020)
Follow-up report No. 3 (05/03/2020)
Follow-up report No. 4 (06/04/2020)
Follow-up report No. 5 (15/04/2020)
Follow-up report No. 6 (09/06/2020)
New outbreaks (2)
Outbreak 1 Perperek, Kardzali
Date of start of the outbreak 05/03/2020
Outbreak status Resolved (09/03/2020)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 16800 225 225 16575 0
Outbreak 2 Trilistnik, Plovdiv
Date of start of the outbreak 12/03/2020
Outbreak status Resolved (18/03/2020)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 39120 1120 1120 38000 0
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 55920 1345 1345 54575 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 2.41% 2.41% 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
  • Unknown or inconclusive
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
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Zoning
  • Disinfection
  • Ante and post-mortem inspections
  • 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 nested RT-PCR 05/03/2020 Positive
National Refernce Laboratory for Avian Influenza/Newcastle Disease (National laboratory) Birds nested RT-PCR 12/03/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations