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Russia - 1 new outbreak of highly pathogenic avian influenza H5N2 in birds in farm, Kostromskaya Oblast (OIE, August 16, 2018)
Russia - 1 new outbreak of highly pathogenic avian influenza H5N2 in birds in farm, Kostromskaya Oblast (OIE, August 16, 2018)
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)
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