Infectious haematopoietic necrosis,
Former Yug. Rep. of Macedonia
Information received on 27/10/2020 from Dr Zoran Atanasov, Director Food and Veterinary Agency, Food and Veterinary Agency, Food and Veterinary Agency , North Macedonia, SKOPJE, Former Yug. Rep. of Macedonia
Summary
Report type Follow-up report No. 1
Date of start of the event 01/09/2020
Date of confirmation of the event 16/09/2020
Report date 27/10/2020
Date submitted to OIE 27/10/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 13/03/2019
Manifestation of disease Sub-clinical infection
Causal agent Infectious haematopoietic necrosis virus
Nature of diagnosis Laboratory (basic), Necropsy
This event pertains to the whole country
Related reports Immediate notification (21/09/2020)
Follow-up report No. 1 (27/10/2020)
New outbreaks (3)
Outbreak 1 Zvan, Zvan, Demir Hisar, Demir Hisar
Date of start of the outbreak 30/09/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Water type Fresh water
Population type Farmed
Production system Semi-closed
Affected animals
Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered
Rainbow trout (Oncorhynchus mykiss) (kg) 0 % 0 % 25000 9 0 0 0
Outbreak 2 Dolenci, Dolenci, Demir Hisar, Demir Hisar
Date of start of the outbreak 30/09/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Water type Fresh water
Population type Farmed
Production system Semi-closed
Affected animals
Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered
Rainbow trout (Oncorhynchus mykiss) (kg) 0 % 0 % 80000 9 0 0 0
Outbreak 3 Golozinci, Golozinci, Caska , Veles
Date of start of the outbreak 08/10/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Water type Fresh water
Population type Farmed
Production system Semi-closed
Affected animals
Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered
Rainbow trout (Oncorhynchus mykiss) (kg) 0 % 0 % 31200 3 0 0 0
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rainbow trout (Oncorhynchus mykiss) (kg) 136200 21 0 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rainbow trout (Oncorhynchus mykiss) (kg) 0.02% 0.00% 0.00% 0.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside infected and/or protection zone
  • Screening
  • Traceability
  • Zoning
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Killing for commercial use or own use
  • Disinfection
Diagnostic test results
Laboratory name and type Species Test Test date Result
Faculty of the Veterinary Medicine - Veterinary Institute (National laboratory) Rainbow trout (Oncorhynchus mykiss) real-time PCR 14/10/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations