Croatia - 1 new outbreak of highly pathogenic H5N8 in backyard birds, Vukovarsko-srijemska (OIE, February 15, 2017)

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Highly pathogenic avian influenza, Croatia

Information received on 15/02/2017 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. 2 Date of start of the event 27/12/2016 Date of confirmation of the event 03/01/2017 Report date 15/02/2017 Date submitted to OIE 15/02/2017 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)

New outbreaks (1)

Outbreak 1 Mlaka Antinska, Mlaka Antinska, Tordinci, VUKOVARSKO-SRIJEMSKA Date of start of the outbreak 09/02/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 453 52 52 342 0 Affected population On 8 February 2017, a suspicion of avian influenza in poultry was reported to the Veterinary and Food Safety Directorate. Approximately 52 poultry were found dead. Some animals showed clinical signs of the disease. Samples were taken and sent to the Croatian Veterinary Institute - Poultry Centre (Croatian Reference Laboratory) in Zagreb. Avian influenza subtype H5N8 was detected in the pooled samples on 10 February 2017. According to the preliminary laboratory results, on 10 February 2017 susceptible species from the affected holding were killed. Also the animals from the holdings that were in contact with the affected holding were killed and sampled. On 14 February 2017, highly pathogenic avian influenza subtype H5N8 was confirmed. Implementation of the disease control measures according to the Directive 2005/94/EC is still ongoing. Laboratory tests on samples from animals originating from contact neighbouring holdings are still ongoing. The numbers of animals (susceptible, killed and destroyed) are preliminary and final results will be presented in a next follow-up report.

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Birds 453 52 52 342 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 11.48% 11.48% 100.00% 86.98% *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 Stamping out Official disposal of carcasses, by-products and waste Vaccination prohibited No treatment of affected animals Measures to be applied Disinfection / Disinfestation

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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