Highly pathogenic avian influenza,
Information received on 03/02/2020 from Dr Bogdan Konopka, Chief Veterinary Officer, Ministry of Agriculture and Rural Development, General Veterinary Inspectorate, Warszaw, Poland
Report type Follow-up report No. 1
Date of start of the event 31/12/2019
Date of confirmation of the event 03/01/2020
Report date 03/02/2020
Date submitted to OIE 03/02/2020
Date event resolved 13/05/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 20/04/2017
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N8
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (22/01/2020)
Follow-up report No. 1 (03/02/2020)
Follow-up report No. 2 (24/02/2020)
Follow-up report No. 3 (12/03/2020)
Follow-up report No. 4 (31/03/2020)
Follow-up report No. 5 (06/04/2020)
Follow-up report No. 6 (23/04/2020)
Follow-up report No. 7 (13/05/2020)
New outbreaks (1)
Outbreak 1 (2020/15) Rabity, Zalewo, Ilawski (2807), Warminsko-Mazurskie
Date of start of the outbreak 24/01/2020
Outbreak status Resolved (26/02/2020)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 23351 5359 4168 19183 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 23351 5359 4168 19183 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 22.95% 17.85% 77.78% 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
Control measures
Measures applied
  • Screening
  • Traceability
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Control of wildlife reservoirs
  • Zoning
  • 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
National Veterinary Research Institute (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 26/01/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations