Characterization of an unusual DS-1-like G8P[8] rotavirus strain from Japan in 2017: Evolution of emerging DS-1-like G8P[8] strains through reassortment.

Characterization of an unusual DS-1-like G8P[8] rotavirus strain from Japan in 2017: Evolution of emerging DS-1-like G8P[8] strains through reassortment. Jpn J Infect Dis. 2019 Feb 28;: Authors: Kamiya H, Tacharoenmuang R, Ide T, Negoro M, Tanaka T, Asada K, Nakamura H, Sugiura K, Umemoto M, Kuroki H, Ito H, Tanaka S, Ito M, Fukuda S, Hatazawa R, Hara Y, Guntapong R, Murata T, Taniguchi K, Suga S, Nakano T, Taniguchi K, Komoto S Abstract The emergence of unusual DS-1-like intergenogroup reassortant rotaviruses having the bovine-like G8 genotype (DS-1-like G8P[8] strains) has been reported from several Asian countries. During the rotavirus surveillance program in Japan in 2017, a DS-1-like G8P[8] strain (RVA/Human-wt/JPN/SO1162/2017/G8P[8]) was identified in 43 rotavirus-positive stool samples. Strain SO1162 was shown to have a unique genotype constellation including both genogroup 1 and 2 genes: G8-P[8]-I2-R2-C2-M2-A2-N2-T2-E2-H2. Phylogenetic analysis revealed that the VP1 gene of strain SO1162 appeared to have originated from DS-1-like G1P[8] strains from Thailand and Vietnam, while the remaining 10 genes were closely related to those of the previously reported DS-1-like G8P[8] strains. Thus, strain SO1162 was suggested to be a reassortant that acquired the VP1 gene from Southeast Asian DS-1-like G1P[8] strains on the genetic background of co-circulating DS-1-like G8P[8] strains. Our findings will provide important insights into th...
Source: Japanese Journal of Infectious Diseases - Category: Infectious Diseases Authors: Tags: Jpn J Infect Dis Source Type: research