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Commentary
Russia Fujian H5N8 Healthy Wigeon Matches Europe
& Chiba
Recombinomics Commentary
December 28, 2014 13:15
The H5 and N8 sequences were very closely related to the sequences from Europe (Germany, Netherlands, England, and Italy) as well as sequences from wild ducks in Ciba, Japan (A/duck/Chiba/26-372-48/2014 and A/duck/Chiba/26-372-61/2014). The recent release of sequences from a crane in Kagoshima, A/crane/Kagoshima/KU1/2014, and a chicken in Miyazaki) A/chicken/Miyazaki/7/2014 define two new Fujian H5 sub-clades, which were still in the clade 2.3.4.6 branch with sequences from South Korea, but were easily distinguished from the European sequences in all 8 gene segments.
The Russian H5 sequence is most closely related to A/duck/England/36254/14 (1701/1704 identities) and partial wigeon sequences in The Netherlands (1647/1650 for A/eurasian wigeon/Netherlands/emc-1/2014). Similarly, the N8 sequence is most closely related to A/turkey/Germany/R2474-L00899/2014, A/turkey/Germany-MV/R2472/2014, and A/Chicken/Netherlands/14015526/2014 with 1404/1406 identities).
These matches fully support a wild bird origin for the outbreaks in Europe and Chiba Japan, with the earliest collection date of September 25, 2014 for the healthy Russian wigeon for this sub-clade.
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