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Recurrent circulation of single nonstructural gene substitution reassortants among human rotaviruses with a short RNA pattern

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Summary

To determine the relative frequency of intergenogroup reassortants of rotavirus in nature, we analyzed the genetic composition of 22 electrophoretically distinct stool isolates which accounted for 95.2% of stool rotaviruses with a short RNA pattern collected during 10 rotavirus seasons. These strains all showed subgroup I and G2 specificities, but two distinct hybridization patterns were observed when the probes prepared from Wa (a member of the Wa genogroup) and KUN (a member of the DS-1 genogroup) were used. Genomic RNAs from 10 strains (accounting for 64% of the field rotaviruses with short RNA pattern) hybridized exclusively to the KUN probe, and thus belonged to the DS-1 genogroup. On the other hand, genomic RNAs of the remaining 12 strains (accounting for 36% of the field rotaviruses with short RNA pattern) formed one hybrid band with the Wa probe and 10 hybrid bands with the KUN probe. Thus, they were single gene substitution intergenogroup reassortants between members of the Wa and DS-1 genogroups. They had a similar genetic constellation in that a gene segment encoding either NS35 or NS34 from a Wa-like strain was introduced into a DS-1-like genome background.

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Authors and Affiliations

  1. Department of Microbiology, Akita University School of Medicine, Akita, Japan

    E. Kaga & O. Nakagomi

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  1. E. Kaga
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  2. O. Nakagomi
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Kaga, E., Nakagomi, O. Recurrent circulation of single nonstructural gene substitution reassortants among human rotaviruses with a short RNA pattern. Archives of Virology 136, 63–71 (1994). https://doi.org/10.1007/BF01538817

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  • DOI: https://doi.org/10.1007/BF01538817

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