Figure. Phylogenetic tree of human astrovirus (HAstV) based on the 289-base region of the open reading frame (ORF) 1a gene (A) and the 413-base region of the ORF2 gene (B). We included 6 novel sequences designated according to isolate code_place/year_GenBank accession no. A) DG6013_Madagascar2004_EF490425, DR0075_Madagascar2005_EF490426, DR0034_Madagascar2004_EF490427, DR0038_Madagascar2004_EF490428, DT1004_Madagascar2004_EF490429; B) DR0038_Madagascar2004_EF519312. We also included 16 sequences of reference astrovirus strains obtained from GenBank, designated according to HAstV genotype_place/year_GenBank accession no.: A) HAstV-1_Oxford1994_L23513, HAstV-2_Atlanta1993_L13745, HAstV-3_Oxford_AF290504, HAstV-4_Oxford2000_AF290505, HAstV-5_Norfolk2000_AF290506, HAstV-6_Oxford2000_AF290507, HAstV-7_Oxford2000_AF290508, HAstV-8_Oxford2000_AF290509; B) HAstV-1_Oxford1994_L23513, HAstV-2_USA1993_ L13745, HAstV-3_Oxford1994_L38505, HAstV-4_Oxford1994_L38506, HAstV-5_USA1994_U15136, HAstV-6_Oxford1994_L38507, HAstV-7_Oxford1994_L38508, HAstV-8_Mexico2000_AF260508. Bootstrap values based on 1,000 generated trees are displayed at the nodes.
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