Fig 3. Phylogenetic analysis based on deduced amino acid sequences of the complete astrovirus ORF2 gene.

The tree was generated using the neighbor-joining method in MEGA 7.0 software with 1,000 bootstrap values, and only bootstrap values >70% were displayed above the tree branches. Triangle indicates FeAstV strains identified in the present study. All FeAstV strains were divided into two groups, group 1 with red line and group 2 with blue line. Names in italics represent genotype species. Host(s) of origin is indicated in brackets.