Neighbor-joining phylogenetic tree based on nucleotide sequences of the VP7-encoding genes for B1711 and other established rotavirus G types. The VP7 sequences were obtained from published reports and the GenBank database. The strains sequenced (and their GenBank accession numbers) are as follows: Wa (KO2033), HU5 (A01028), SA11 (K02028), ST3 (X13603), OSU (X04613), NCDV (M12394), PA151 (L20881), Se584 (AJ311740), CH2 (X56784), B37 (J04334), B223 (X57852), YM (M23194), L26 (M58290), L333 (D13549), FI23 (M61876), Hg18 (AF237666). The VP7 sequence of WI61 was obtained from Green et al. (29). Abbreviations: BO, bovine; HU, human; PO, porcine; EQ, equine; CH, chicken.