Bulgaria - 4 new outbreaks of highly pathogenic avian influenza H5N8 in backyard birds and farms, Stara Zagora, Haskovo, Plovdiv (OIE, November 17, 2018)

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Highly pathogenic avian influenza, Bulgaria

Information received on 17/11/2018 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. 4 Date of start of the event 03/10/2018 Date of confirmation of the event 03/10/2018 Report date 17/11/2018 Date submitted to OIE 17/11/2018 Reason for notification Recurrence of a listed disease Date of previous occurrence 28/09/2018 Manifestation of disease Sub-clinical infection 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 (08/10/2018) Follow-up report No. 1 (18/10/2018) Follow-up report No. 2 (26/10/2018) Follow-up report No. 3 (04/11/2018) Follow-up report No. 4 (17/11/2018)

New outbreaks (4)

Outbreak 1 Pravoslav, Bratya Daskalovi, Stara Zagora Date of start of the outbreak 07/11/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3500 3 3 3497 0

Outbreak 2 Chernogorovo, Dimitrovgrad, Haskovo Date of start of the outbreak 07/11/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 39200 550 550 38650 0

Outbreak 3 Elena, Haskovo, Haskovo Date of start of the outbreak 09/11/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 220 200 200 20 0

Outbreak 4 Choba, Plovdiv, Brezovo, Plovdiv Date of start of the outbreak 15/11/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 1380 20 0 1380 0

Summary of outbreaks Total outbreaks: 4 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 44300 773 753 43547 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 1.74% 1.70% 97.41% 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 Traceability Official destruction of animal products Official disposal of carcasses, by-products and waste Stamping out 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 and Newcastle disease (National laboratory) Birds real-time PCR 07/11/2018 Positive National reference laboratory for avian influenza and Newcastle disease (National laboratory) Birds real-time PCR 15/11/2018 Positive

Future Reporting The event is continuing. Weekly follow-up reports will be submitted.

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