Key result
A novel porcine group A rotavirus strain, RVA/Pig/China/LNCY/2016/G3P[13], was identified as a natural recombinant between P[23] and P[7] strains with evidence of human-pig reassortment.
Raises zoonotic reassortment concerns in swine; leaves open transmissibility and surveillance needs pending further data.
Group A rotaviruses (RVAs) are a major cause of serious intestinal disease in piglets. In this study, a novel pig strain was identified in a stool sample from China. The strain was designated RVA/Pig/China/LNCY/2016/G3P[13] and had a G3-P[13]-I5-R1-C1-M1-A8-N1-T1-E1-H1 genome. The viral protein 7 (VP7) and non-structural protein 4 (NSP4) genes of RVA/Pig/China/LNCY/2016/G3P[13] were closely related to cogent genes of human RVAs, suggesting that a reassortment between pig and human strains had occurred. Recombination analysis showed that RVA/Pig/China/LNCY/2016/G3P[13] is a natural recombinant strain between the P[23] and P[7] RVA strains, and crossover points for recombination were found at nucleotides (nt) 456 and 804 of the VP4 gene. Elucidating the biological characteristics of porcine rotavirus (PoRV) will be helpful for further analyses of the epidemic characteristics of this virus. The results of this study provide valuable information for RVA recombination and evolution and will facilitate future investigations into the molecular pathogenesis of RVAs.
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Jing et al. (2017) studied Group A rotavirus infection. Genomic characterization was evaluated on Genomic sequence and recombination analysis. A novel porcine group A rotavirus strain, RVA/Pig/China/LNCY/2016/G3P[13], was identified as a natural recombinant between P[23] and P[7] strains with evidence of human-pig reassortment.
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