Croatia - 4 new outbreaks of highly pathogenic H5N8 in backyard birds, Vukovarsko-srijemska (OIE, February 16, 2017)

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Highly pathogenic avian influenza, Croatia

Information received on 16/02/2017 from Dr Damir Agičić, Assistant to Minister, Chief Veterinary Officer, Veterinary and Food Safety Directorate, CRO Ministry of Agriculture, ZAGREB, Croatia

Summary Report type Follow-up report No. 3 Date of start of the event 27/12/2016 Date of confirmation of the event 03/01/2017 Report date 16/02/2017 Date submitted to OIE 16/02/2017 Reason for notification New strain of a listed disease in the country Causal agent Highly pathogenic avian influenza virus Serotype H5N8 Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced) This event pertains to a defined zone within the country Related reports Immediate notification (05/01/2017) Follow-up report No. 1 (16/01/2017) Follow-up report No. 2 (15/02/2017) Follow-up report No. 3 (16/02/2017)

New outbreaks (4)

Outbreak 1 Mlaka Antinska 3, Mlaka Antinska 3, Tordinci, VUKOVARSKO-SRIJEMSKA Date of start of the outbreak 10/02/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 34 10 0 34 0 Affected population Disease is confirmed on the neighbouring holding.

Outbreak 2 Mlaka Antinska 4, Mlaka Antinska 4, Tordinci, VUKOVARSKO-SRIJEMSKA Date of start of the outbreak 10/02/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 28 20 0 28 0 Affected population Disease is confirmed on the neighbouring holding.

Outbreak 3 Mlaka Antinska 5, Mlaka Antinska 5, Tordinci, VUKOVARSKO-SRIJEMSKA Date of start of the outbreak 10/02/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 30 15 0 30 0 Affected population Disease is confirmed on the neighbouring holding.

Outbreak 4 Mlaka Antinska 2, Mlaka Antinska 2, Tordinci, VUKOVARSKO-SRIJEMSKA Date of start of the outbreak 10/02/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 11 7 0 11 0 Affected population Disease is confirmed on the neighbouring holding.

Summary of outbreaks Total outbreaks: 4 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Birds 103 52 0 103 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 50.49% 0.00% 0.00% 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 Disinfection / Disinfestation Stamping out Official disposal of carcasses, by-products and waste 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 Croatian Veterinary Institute, Poultry Centre (National laboratory) Birds polymerase chain reaction (PCR) 14/02/2017 Positive

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

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