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Fujian H5N8 In Healthy Eurasian Wigeon In Northeast Russia
Recombinomics Commentary
December 26, 2014 18:15

Date of start of the outbreak 25/09/2014
Outbreak status Resolved (03/10/2014)

Highly pathogenic avian influenza (HPAI) H5 was identified in a sample (trachea) from hunted healthy Eurasian Wigeon through monitoring activities organized by Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing (Rospotrebnadzor).

Preliminary analysis suggests this H5N8 is similar to the HPAIVs identified in Asian-Pacific region and Europe as some HA and NA genes fragments are consistent with current HPAI H5N8 virus. Further investigation of this HPAI virus including pathogenicity tests in chickens and full genom sequencing will be done in Federal Centre for Animal Health (FGBI ARRIAH), Vladimir in the nearest future.

The above comments from a December 25, 2014 OIE report suggest that a healthy Eurasian wigeon was shot by a hunter in September, but the sample was only tested recently.  Partial sequencing suggests that the H5 and N8 are related to H5N8 Fujian clade sequences recently reported for Europe and Japan, and suggested for H5N8 and H5N2 isolates from the United States and Canada.

The location in northeastern Russia (see map) suggests that H5N8 was common in Russia over the summer and subsequent migration led to outbreaks in Japan, Europe, and North America.

Release of sequences would be useful.

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