Highly pathogenic avian influenza,
Russia
Information received on 16/08/2018 from Dr Nikolay Vlasov, Deputy Head of the Rosselkhoznadzor, Ministry of Agriculture, Ministry of Agriculture, Moscow, Russia
Summary
Report type Immediate notification
Date of start of the event 09/08/2018
Date of confirmation of the event 11/08/2018
Report date 16/08/2018
Date submitted to OIE 16/08/2018
Reason for notification Recurrence of a listed disease
Date of previous occurrence 13/03/2018
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
New outbreaks (1)
Outbreak 1 Harino, Kostromskoy, Kostromskaya Oblast
Date of start of the outbreak 09/08/2018
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 498485 506 506 1223
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 498485 506 506 1223
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.10% 0.10% 100.00% **
*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 The virus isolate was identified as H5N2 subtype by PCR and nucleotide sequencing. The comparative analysis of the obtained nucleotide sequences of the H gene and N gene fragments revealed that the isolate belongs to the Asian genetic lineage of highly pathogenic avian influenza (Clade 2.3.4.4.) which spread in the Russian Federation as well as in Asian, European, Middle Eastern and African countries in 2016-2018. The hemagglutinin cleavage site has a ?REKRRKRGLF- structure, characterizing the virus as potentially highly virulent.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance within containment and/or protection zone
  • Screening
  • Quarantine
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Control of wildlife reservoirs
  • Disinfection
  • 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
All-Russian Research Institute for Animal Health (OIE Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 11/08/2018 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
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WAHIS
http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=27576