Highly pathogenic avian influenza,
Information received on 18/11/2016 from Dr Tomislav Kiš, Assistant to Minister, Veterinary and Food Safety Directorate, Ministry of Agriculture, Zagreb, Croatia
Report type Follow-up report No. 1
Date of start of the event 30/10/2016
Date of confirmation of the event 09/11/2016
Report date 18/11/2016
Date submitted to OIE 18/11/2016
Date event resolved 07/06/2017
Reason for notification New strain of a listed disease in the country
Causal agent Highly pathogenic avian influenza virus
Serotype H5N8
Nature of diagnosis Suspicion, Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
This event pertains to a defined zone within the country
Related reports Immediate notification (10/11/2016)
Follow-up report No. 1 (18/11/2016)
Follow-up report No. 2 (08/12/2016)
Follow-up report No. 3 (16/01/2017)
Follow-up report No. 4 (19/01/2017)
Follow-up report No. 5 (24/01/2017)
Follow-up report No. 6 (27/01/2017)
Follow-up report No. 7 (10/02/2017)
Follow-up report No. 8 (17/02/2017)
Follow-up report No. 9 (24/02/2017)
Follow-up report No. 10 (07/06/2017)
New outbreaks (1)
Outbreak 1 River Drava- Bijelo Brdo, Bijelo Brdo, Erdut, Osijecko-Baranjska
Date of start of the outbreak 12/11/2016
Outbreak status Resolved (07/06/2017)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Mute Swan:Cygnus olor(Anatidae) 6 6 0 0
Affected population Five dead swans were found on the river Drava, near Bijelo Brdo. Organ samples were taken and submitted to the Poultry Centre of the Croatian Veterinary Institute. Highly pathogenic avian influenza H5N8 was isolated. Additionally on the same location, on November 28, 2016 one more swan was found dead, sampled and laboratory results confirmed H5N8.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Mute Swan:Cygnus olor(Anatidae) 6 6 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Mute Swan:Cygnus olor(Anatidae) ** ** 100.00% **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments Following control measures for prevention of possible introduction of infection into poultry holdings are applied: - prohibition of exhibitions, fairs and sports competitions for poultry and birds on the entire territory of Croatia, - recommendation to the poultry owners to keep the animals indoors (applied on the entire territory of Croatia) and - ban on keeping poultry outside within 3 km radius where infected wild birds have been found.
Control measures
Measures applied
  • 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) Mute Swan real-time PCR 18/11/2016 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations