Highly pathogenic avian influenza,
Information received on 05/01/2017 from Dr Damir Agicic, Assistant to Minister, Chief Veterinary Officer, Veterinary and Food Safety Directorate, CRO Ministry of Agriculture, ZAGREB, Croatia
Report type Immediate notification
Date of start of the event 27/12/2016
Date of confirmation of the event 03/01/2017
Report date 05/01/2017
Date submitted to OIE 05/01/2017
Date event resolved 23/03/2017
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 (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)
Follow-up report No. 4 (02/06/2017)
New outbreaks (1)
Outbreak 1 Kriznica, Kriznica, Pitomaca, Viroviticko-Podravska
Date of start of the outbreak 27/12/2016
Outbreak status Resolved (29/01/2017)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 41 16 16 25 0
Affected population In total 941 poultry were killed. All measures in accordance with Directive 2005/94/EC are implemented.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 41 16 16 25 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 39.02% 39.02% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments On 27 December 2016, a suspicion of avian influenza in backyard poultry was reported to the Veterinary and Food Safety Directorate. Fifteen chickens and one turkey were found dead. The 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 29 December 2016. According to the preliminary laboratory results, on 30 December 2016 all susceptible species from the affected holding as well as animals in the affected area were killed. On 3 January 2017, highly pathogenic avian influenza subtype H5N8 was confirmed. Implementation of the disease control measures according to the Directive 2005/94/EC is ongoing.
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
  • 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) 03/01/2017 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations