Russia has reported an extensive outbreak of H5N1 Highly Pathogenic Avian Influenza to the World Organization of Animal Health.  According to the submission, the farm comprised 490,600 birds (type not specified).  The outbreak was recognized on July 21^st but was confirmed four days later on July 25^th. 

The farm was located in Cherepovetskiy district in Vologda Province (Oblast).  As with previous initial reports by Russia, only 27,000 birds were “killed and disposed of”.  This suggests a limited depopulation possibly confined to the index house.   In previous reports, partial depletion was initially reported but followed by subsequent more extensive to complete culling and disposal. 

The Vologda Oblast is located on the East European Plain in western Russia located due east of St. Petersburg and north of Moscow.