Croatia - 4 new outbreaks of highly pathogenic H5N5 in backyard birds and farms, Krapinsko-Zagorska (OIE, March 17, 2017)

[Pathfinder]

Highly pathogenic avian influenza, Croatia

Information received on 17/03/2017 from Dr Damir Agičić, Assistant to Minister, Chief Veterinary Officer, Veterinary and Food Safety Directorate, CRO Ministry of Agriculture, ZAGREB, Croatia

Summary Report type Immediate notification Date of start of the event 08/03/2017 Date of confirmation of the event 15/03/2017 Report date 17/03/2017 Date submitted to OIE 17/03/2017 Reason for notification New strain of a listed disease Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N5 Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (4)

Outbreak 1 Spickovina 1, Spickovina, Zabok, KRAPINSKO-ZAGORSKA Date of start of the outbreak 08/03/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 23 23 23 0 0

Outbreak 2 Spickovina 2, Spickovina, Zabok, KRAPINSKO-ZAGORSKA Date of start of the outbreak 08/03/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 20 20 20 0 0

Outbreak 3 Spickovina 3, Spickovina, Zabok, KRAPINSKO-ZAGORSKA Date of start of the outbreak 14/03/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 3 3 0 3 0

Outbreak 4 Spickovina 4, Spickovina , Zabok, KRAPINSKO-ZAGORSKA Date of start of the outbreak 14/03/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 19 19 0 19 0

Summary of outbreaks Total outbreaks: 4 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Birds 65 65 43 22 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 100.00% 66.15% 66.15% 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 Epidemiological comments Suspicion on the disease for two neighbouring holdings (Spickovina 1 and Spickovina 2) was notified at the same time on the 8th March 2017 following an increased mortality in birds (all poultry heads on both holdings were found dead). According to the observation of authorised veterinarian on the neighbouring area there are two small ponds on which wild ducks gather. AI subtype H5N5 in poultry was confirmed on the 13th March 2017. Following the confirmation of AI, the measures were applied on 15 holdings on 14th March 2017, and approximately 248 poultry heads were killed and destroyed. Three neighbouring holdings were additionally tested and two (out of three; Spickovina 3 and Spickovina 4) reacted positively to avian influenza. There were no clinical signs (including mortality) on those holdings. Virus sequencing was finished on the 15th March; highly pathogenic avian influenza is confirmed. Conducting of measures according to the Directive 2005/94 is still ongoing.

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) 13/03/2017 Positive Croatian Veterinary Institute, Poultry Centre (National laboratory) Birds virus sequencing 15/03/2017 Positive

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

...

http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=23284