On April 21, 2008, four whooper swans were found dead at Lake Towada, Akita prefecture, Japan. Highly pathogenic avian influenza virus of the H5N1 subtype was isolated from specimens of the affected birds. The hemagglutinin (HA) gene of the isolate belongs to clade 2.3.2 in the HA phylogenetic tree.
All Keywords
【저자키워드】 Phylogeny, dispatch, H5N1 subtype, influenza in birds,
【저자키워드】 Phylogeny, dispatch, H5N1 subtype, influenza in birds,