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dc.contributor.authorAksara Thongprachumen_US
dc.contributor.authorWisoot Chan-iten_US
dc.contributor.authorPattara Khamrinen_US
dc.contributor.authorShoko Okitsuen_US
dc.contributor.authorShuichi Nishimuraen_US
dc.contributor.authorHideaki Kikutaen_US
dc.contributor.authorAtsuko Yamamotoen_US
dc.contributor.authorKumiko Sugitaen_US
dc.contributor.authorTsuneyoshi Babaen_US
dc.contributor.authorMasashi Mizuguchien_US
dc.contributor.authorNiwat Maneekarnen_US
dc.contributor.authorSatoshi Hayakawaen_US
dc.contributor.authorHiroshi Ushijimaen_US
dc.description.abstractThe molecular epidemiology and characterization of rotaviruses obtained from non-hospitalized children with acute gastroenteritis in five different prefectures (Hokkaido, Saga, Tokyo, Osaka, and Kyoto) from July 2009 to June 2011 was investigated. Among 831 fecal specimens tested, rotavirus was found in 165 specimens (19.9%). The rotavirus detection rate in 2010-2011 (23.3%) was higher than those in 2009-2010 (16.0%). The highest prevalence of rotavirus was found in children aged 12 to 23. months. Rotavirus could be detected throughout the 8. month period with a peak in April. We found that G3P[8] was the most prevalent genotype (54.5%), followed by G1P[8] (29.1%), G9P[8] (9.1%), G3P[4] (3.0%), G2P[4] (2.5%), G1P[4] (1.2%), and G4P[8] (0.6%), respectively. Interestingly, G3 strains emerged as the most predominant genotype and replaced G1 rotavirus which had been reported as the most predominant genotype in the previous studies. Phylogenetic analysis revealed that G3 rotavirus strains were closely related to the " new variant G3" 5091 strain, which emerged in Japan in 2003-2004. A significant increase in the prevalence of rotavirus G3 found in this study indicates that rotavirus G3 strain is the major cause of infection in five geographical areas of Japan and may distribute globally in the near future. © 2012.en_US
dc.subjectAgricultural and Biological Sciencesen_US
dc.subjectBiochemistry, Genetics and Molecular Biologyen_US
dc.subjectImmunology and Microbiologyen_US
dc.titleReemergence of new variant G3 rotavirus in Japanese pediatric patients, 2009-2011en_US
article.title.sourcetitleInfection, Genetics and Evolutionen_US
article.volume13en_US of Tokyoen_US University School of Medicineen_US Mai Universityen_US
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