Author : Ibrokhim Y. Abdurakhmonov
Publisher : Intechopen
ISBN 13 : 1789232805
Total Pages : 182 pages
Book Rating : 4.7/5 (892 download)
Book Synopsis Genotyping by : Ibrokhim Y. Abdurakhmonov
Download or read book Genotyping written by Ibrokhim Y. Abdurakhmonov and published by Intechopen. This book was released on 2018 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: A rare norovirus (NoV) genotype GII.17 has recently emerged and rapidly became predominant in most East Asian countries in the winters of 2014-2015. In this study, we report the diversity of NoV GII.17 in detail; a total of 646 GII.17 sequences obtained during 1978-2015 were analyzed and subjected to meta-analysis. At least five major recombinant GII.17 clusters were identified. Each recombinant variant group appeared to have emerged following the time order: GII.P4-GII.17 (1978-1990), GII.P16-GII.17 (2001-2004), GII.P13-GII.17 (2004-2010), GII.Pe-GII.17 (2012-2015) and GII.P3-GII.17 (2011-2015). The newly emerged GII.P3-GII.17 variant, which exhibited significant sequence and structure variations, is evolving toward a unique lineage. Our results indicate that circulation of GII.17 appears to change every 3-5 years due to replacement by a newly emerged variant and that the evolution of GII.17 is sequentially promoted by inter-genotype recombination, which contributes to the exchange between non-GII.17 and GII.17 RdRp genes and drives the evolution of GII.17 capsid genes.