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Putative genomic compositions of the novel avian influenza (H5N8) virus with possible donor viruses. The genomic segments of three putative donor viruses are coded by color with each of the eight viral genomic segments represented by a horizontal bar. k1203 (H5N8), A/duck/Jiangsu/k1203/2010; 23(H11N9), A/environment/Jiangxi/28/2009; S11643 (H4N9), A/duck/Hunan/S11643/2013; SH-9 (H5N8), A/mallard duck/Shanghai/SH-9/2013.
