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H9N2 subtype influenza virus has become worldwide and prevalent in China. Previous studies illustrated that at least three sublineages had been established in terrestrial poultry of Eurasian avian. In this presentation, eight full-length genes of an H9N2 strain, A/Chicken/Shanghai/F/98 (Ck/SH/F/98) were obtained. Sequence analysis and phylogenetic studies were conducted by comparing eight genes with...