Influenza A virus antigenic subtypes isolated from wild and domestic animal species in the Novosibirsk Region (2003–2011 period).

VP, virus pathogenicity.
VI pos, virus isolation positive.
LP, low pathogenicity; HP, high pathogenicity.
* Underlining indicates year in which a specific HN subtype was prevalent, i.e. represented at least 25% of all influenza isolates for that year.
UD, unpublished data.
In bold, isolation data from a period in which H5N1 HPAI epizootics occurred.