Phylogenetic trees based on nucleotide sequences of the NoV GII.4 strain for full genomic sequences. The trees were constructed by the neighbor-joining method. Numbers on each branch indicate the bootstrap values obtained from 1,000 replicates. The following isolates were analyzed (accession numbers/strain named/collection year/nation/region). The gg-12-08-04 is indicated by a red circle. Reference sequences were as follows: Lordsdale (X86557), Camberwell (AF145896), CHDC5191 (FJ537134), Ohio 7G (JX126913), Langen1061 (AY485642), B4S6 (AY587985), Carlow (DQ415279), Farmington Hills (AY502023), Hunter504D (DQ078814), Saga5 (AB447458), NZ327 (EF187497), AlbertaEI513 (JX445157), CUK-3 (FJ514242), Saga1 (AB447456), AlbertaEI009 (JX445159), Aichi3 (AB447446), NSW696T (EF684915), Osaka1 (AB541319), PC51 (EU921388), AlbertaEI210 (JX445161), Seoul1072 (JX439816), Osaka2 (AB541322), Iwate3 (AB541272), Hokkaido5 (AB541268), HS288 (KJ407075), HS292 (KJ407073), NIHIC11.3 (KF712504), New Orleans (JN595867), AlbertaEI003 (JX445169), New Orleans 1805 (GU445325), NSW767L (JX459902), Jingzhou (KF306214), AlbertaEI063 (KF509946), BG1C0405 (KJ685412), CUHK6080 (KC631827), CUHK3630 (KC175323), Sydney NSW0514 (JX459908), Woonona NSW3309 (JX459907), CGMH54 (KX517364), Jiangsu2 (KC577175), CGMH68 (KC517378), and CGMH67 (KC517377).