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Phylogenetic analysis of the partial ORF1a (∼800 nt), ORF1b, and ORF2 nucleotide sequences comparing bat astrovirus AFCD337 (underlined) with astroviruses of other species. Nine other bat astrovirus sequences are included in the ORF1a (partial) and ORF1b phylogenetic trees. Alignment was based on the encoded amino acid sequences. Astroviruses are indicated as follows: BatAstV, bat; MAstV, mink; OAstV, ovine; HAstV-1, human type 1 (also types 4, 5, and 8); and TAstV-1, turkey type 1.
