| pathological analysis and genetic characterization of the first outbreak h5n8 subtype avian influenza virus isolated from wild swan in shandong, china. | in january 2021, an outbreak of h5n8 subtype avian influenza was identified from wild mute swans (cygnus olor) in an overwintering site located within yellow river delta nature reserve in shandong, china, for the first time. we sequenced the hemagglutinin (ha) and neuraminidase (na) genome segments of the virus, named a/mute swan/shandong/1/2021 (h5n8), and explored the genetic characterization and comparative phylogenetic analysis to track its origin. the wild swans prior to death showed nervou ... | 2021 | 34359099 |