Phylogenetic tree of the partial HA gene of HPAI H5N8 FN: Fig. show all HA gene of positive samples included in AI H5N8 clade 2.3.4.4 group B. The sequenced viruses were clustered together in group B Russian like reassortant H5N8 viruses of clade 2.3.4.4. black dots refer to the isolates of this study.