H5N1 to Russia through poultry?

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  • #3353
    Martin W

      From conservationist concerned re H5N1:

      This looks to be an important article: I haven’t sent the whole text,
      only the conclusion, as it’s mainly about how they did the analysis.
      However, there’s a link to the full piece below.

      What’s interesting:

      1) The Novosibirsk strain is closely related to those in Asia 2003-2005
      and Japan 2003-2004, which we know from Chen and others work were
      poultry-derived (there goes another of New Scientist’s silly outburst
      2) Further confirmtion of Guan Yi’s findings that the Qinghai “wild
      bird” strain was closely related to Chinese poultry strains, and not a
      “new strain” first seen in “wild birds” at the lake.

      Given there is now doubt over the “wild” origins of the Bar-headed Geese
      at Qinghai, this paper seems to me to strengthen the case even further
      for westwards movement of the virus in poultry.

      Incidently, did the two Lvov papers (on the Novosibirsk outbreak) ever
      get published? They included information on the infamous “asymptomatic
      grebe” and were posted on the web for comment. The conclusions on the
      data presented were so ridiculous that I imagine the paper was
      rejected/withdrawn pending a major rewrite.

      H5N1 Influenza Virus, Domestic Birds, Western Siberia, Russia
      Alexander M. Shestopalov,* Alexander G. Durimanov,* Vasily A. Evseenko,*
      Vladimir A. Ternovoi,* Yury. N. Rassadkin,* Yulya V. Razumova,* Anna V.
      Zaykovskaya,* Sergey I. Zolotykh,* and Sergey V. Netesov*
      *State Research Center Virology and Biotechnology Vector, Koltsovo,
      Novosibirsk, Russia


      We isolated H5N1 influenza virus from the spleen of a turkey that died
      during an outbreak in poultry in western Siberia in July 2005. HA and NA
      genes of this virus were closely related to those of H5N1 avian
      influenza viruses that caused outbreaks in birds in Asian countries from
      2003 to 2005 and in Japan in 2003 and 2004. The corresponding isolate,
      A/Turkey/Suzdalka/Nov-1/05, from turkey spleen was highly pathogenic for
      chickens in the laboratory intravenous pathogenicity index test. The
      origin of this H5N1 virus in western Siberia is not known. Migratory
      birds could have introduced this virus because western Siberia is
      located on a flyway of wild birds that migrate in the spring from
      southeastern Asia. [so, why didn’t eastern Siberia, northeast China likewise suffer major outbreaks?] Highly pathogenic Asian H5N1 influenza virus in
      western Siberia demonstrates spread of these Asian viruses into new
      areas and suggests a larger geographic distribution.
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