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Russia - OIE: Avian Flu H5N1 Found in Russian Swan - August 8, 2015

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  • Russia - OIE: Avian Flu H5N1 Found in Russian Swan - August 8, 2015

    OIE link

    RUSSIA - Routine avian influenza monitoring uncovered a whooper swan with the disease at a nature park by the Ingren Lake.


    snip

    The comparative analysis of the obtained nucleotide sequence of the H gene fragment showed that the tested isolate belonged to an Asian lineage of highly pathogenic avian influenza virus and was most similar to type A H5N1 HPAIV isolates recovered in the Tyva Republic in May, in the Astrakhan Oblast in April, 2015 and in Vietnam and China over the period from 2012 to 2014.
    .

    http://www.thepoultrysite.com/poultr...-russian-swan/



    Last edited by sharon sanders; August 12, 2015, 09:00 AM. Reason: added OIE link

  • #2
    Highly pathogenic avian influenza,
    Russia
    Information received on 11/08/2015 from Dr Evgeny Nepoklonov, Deputy Head, Federal Service for Veterinary and Phytosanitary Surveillance, Ministry of Agriculture, Moscow, Russia
    Summary
    Report type Follow-up report No. 2
    Date of start of the event 10/05/2015
    Date of confirmation of the event 09/06/2015
    Report date 10/08/2015
    Date submitted to OIE 11/08/2015
    Reason for notification Reoccurrence of a listed disease
    Date of previous occurrence 27/04/2015
    Manifestation of disease Clinical disease
    Causal agent Highly pathogenic avian influenza virus
    Serotype H5N1
    Nature of diagnosis Laboratory (basic), Laboratory (advanced)
    This event pertains to a defined zone within the country
    Related reports Immediate notification (10/06/2015)
    Follow-up report No. 1 (24/07/2015)
    Follow-up report No. 2 (10/08/2015)
    New outbreaks (1)
    Outbreak 1 Ivanovo-Arakhleisky, Chitinsky, ZABAJKAL`SKIJ KRAY
    Date of start of the outbreak 10/05/2015
    Outbreak status Resolved (06/08/2015)
    Epidemiological unit Natural park
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Whooper Swan:Cygnus cygnus(Anatidae) 1 1 0 0
    Summary of outbreaks Total outbreaks: 1
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Whooper Swan:Cygnus cygnus(Anatidae) 1 1 0 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Whooper Swan:Cygnus cygnus(Anatidae) ** ** 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
    • Contact with wild species
    Epidemiological comments As part of AI monitoring, samples from a whooper swan at Ingren Lake in the Chitinsky Raion of the Zabaykalsky Krai on May 10, 2015 were analysed. Real-time RT-PCR showed H5N1 avian influenza A virus genome to be present in a sample of internal organs. The haemmaglutinin cleavage site of this virus includes several basic amino acids and has ? SPQRERRRKR ? structure which allows this virus to be characterized as highly virulent. The comparative analysis of the obtained nucleotide sequence of the H gene fragment showed that the tested isolate belonged to an Asian lineage of highly pathogenic avian influenza (lineage A/Guandong/1/96 lineage, clade 2.3.2.1) and was most similar to type A H5N1 HPAIV isolates recovered in the Tyva Republic in May, 2015 (98,83-100% identity), in the Altay Krai in 2014 (98.83% identity), in the Astrakhan Oblast in April, 2015 (98,44% identity) and in Vietnam and China over the period from 2012 to 2014 (98.44-98.04% identity).
    Control measures
    Measures applied
    • Control of wildlife reservoirs
    • Movement control inside the country
    • Screening
    • No vaccination
    • 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 (FGBI-ARRIAH) (National laboratory) Whooper Swan haemagglutination inhibition test (HIT) 06/08/2015 Positive
    All-Russian Research Institute for Animal Health (FGBI-ARRIAH) (National laboratory) Whooper Swan real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 06/08/2015 Positive
    All-Russian Research Institute for Animal Health (FGBI-ARRIAH) (National laboratory) Whooper Swan virus isolation 06/08/2015 Positive
    All-Russian Research Institute for Animal Health (FGBI-ARRIAH) (National laboratory) Whooper Swan virus sequencing 06/08/2015 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    .../
    "Safety and security don't just happen, they are the result of collective consensus and public investment. We owe our children, the most vulnerable citizens in our society, a life free of violence and fear."
    -Nelson Mandela

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