Abstract
Group A rotaviruses (RVAs) are major pathogens associated with acute gastroenteritis in young children and in a wide variety of domestic animals. The full-length genome of a rabbit RVA strain, RVA/Rabbit-tc/CHN/N5/1992/G3P[14], showed a G3-P[14]-I17-R3-C3-M3-A9-N1-T1-E3-H2 genomic configuration. A novel VP6 genotype, I17, was confirmed by the Rotavirus Classification Working Group. Phylogenetic analyses revealed that strain N5 possessed VP1–3, VP7, NSP1–2 and NSP4 genes closely related to those of the simian strain TUCH, NSP3 and NSP5 genes closely related to the human strains Wa and 69M, and a VP4 gene closely related to the rabbit strain 30/96 and sheep strain OVR762. The RRV and TUCH shared their ancestry with canine/feline RVAs and showed a close relationship to the human T152/feline-like RVAs. Comparison with the genotypes of the simian strains TUCH and RRV, canine strains A79-10, CU-1, K9, feline strains Cat2 and Cat97, and human strains T152 and 69M showed that RVA/Rabbit-tc/CHN/N5/1992/G3P[14] was possibly of feline/canine origin, or was a multiple reassortment involving canine, feline and human rotaviruses. The sequencing and phylogenetic analyses of rotavirus genomes is critical to the elucidation of the patterns of virus evolution.
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