Information received on 21/11/2020 from Dr Tatjana Kara?i?, Assistant Minister, Chief Veterinary Officer, Veterinary Services, Ministry of Agriculture, Zagreb, Croatia
Summary
Report type Immediate notification
Date of start of the event 17/11/2020
Date of confirmation of the event 21/11/2020
Report date 21/11/2020
Date submitted to OIE 21/11/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 07/06/2017
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N8
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
This event pertains to the whole country
New outbreaks (1)
Outbreak 1 Delovi, Delovi, Novigrad Podravski, Koprivnicko-Krizevacka
Date of start of the outbreak 17/11/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 4315
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds ** 4315
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** ** ** **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Epidemiology
Source of the outbreak(s) or origin of infection
Unknown or inconclusive
Epidemiological comments Increased mortality was observed on the commercial fattening turkey farm in Delovi (municipality: Novigrad Podravski) in the county: Koprivnica- Kri?evci with approx. 70 000 animals, on November 17, 2020. Samples were taken and sent to Croatian Veterinary Institute- Poultry Centre in Zagreb. Avian influenza- subtype H5N8 was detected in the pooled samples. On November 21, 2020 HPAI subtype H5N8 is confirmed. Implementation of disease control measures according to the Directive 2005/94/EC as well as epidemiological investigation is still ongoing.
Control measures
Measures applied
Stamping out
Vaccination prohibited
No treatment of affected animals
Measures to be applied
Surveillance within containment and/or protection zone
Official disposal of carcasses, by-products and waste
Disinfection
Diagnostic test results
Laboratory name and type Species Test Test date Result
Croatian Veterinary Institute - Poultry Center (National laboratory) Birds real-time PCR 18/11/2020 Positive
Croatian Veterinary Institute - Poultry Center (National laboratory) Birds virus sequencing 21/11/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.