Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
Russia
Information received on 04/08/2020 from Dr Nicolay Vlasov, , Federal Service for Veterinary and Phytosanitary Surveillance , Ministry of Agriculture, Moscow, Russia
Summary
Report type Immediate notification
Date of start of the event 28/07/2020
Date of confirmation of the event 03/08/2020
Report date 04/08/2020
Date submitted to OIE 04/08/2020
Date event resolved 23/10/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 24/11/2005
Manifestation of disease Clinical disease
Causal agent Highly pathogenic influenza A virus
Serotype H5N8
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
This event pertains to a defined zone within the country
Related reports Immediate notification (04/08/2020)
Follow-up report No. 1 (02/11/2020)
New outbreaks (2)
Outbreak 1 Peschanoe, Uvel’sky, Chelyabinskaya Oblast
Date of start of the outbreak 28/07/2020
Outbreak status Resolved (23/10/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 156 105 105 51 0
Affected population Chickens, Ducks, Geese
Outbreak 2 Maloe Shumakovo, Uvel’sky, Chelyabinskaya Oblast
Date of start of the outbreak 28/07/2020
Outbreak status Resolved (23/10/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 81 30 30 51 0
Affected population Chickens, Ducks, Geese
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 237 135 135 102 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 56.96% 56.96% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Contact with wild species
Epidemiological comments Restriction zones have been established and epidemiological investigations started. Culling and safe disposal of birds is in progress. No bird or bird products have been dispatched outside from affected territories. A wild duck carcass was found during AI passive surveillance on the lake near the village just before the outbreak started. HPAIv H5N8 was detected in a sample of wild duck carcass.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Screening
  • Traceability
  • Quarantine
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Control of wildlife reservoirs
  • Zoning
  • Disinfection
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • Stamping out
Diagnostic test results
Laboratory name and type Species Test Test date Result
Chelyabinsk office of the Federal Governmental Budgetary InstitutionCentral Scientific and Methodical Veterinary Laboratory (Local laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 01/08/2020 Positive
All-Russian Research Institute for Animal Health (OIE Reference Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 01/08/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations