| emergence of a new multidrug-resistant serotype x variant in an epidemic clone of shigella flexneri. | shigella spp. are the causative agent of shigellosis with shigella flexneri serotype 2a being the most prevalent in developing countries. epidemiological surveillance in china found that a new serotype of s. flexneri appeared in 2001 and replaced serotype 2a in 2003 as the most prevalent serotype in henan province. the new serotype also became the dominant serotype in 7 of the 10 other provinces under surveillance in china by 2007. the serotype was identified as a variant of serotype x. it diffe ... | 2010 | 19955273 |
| prevalence and characterization of human shigella infections in henan province, china, in 2006. | in 2006, 3,531 fecal samples were collected from patients with diarrhea in henan province, china. a total of 467 (13.2%) shigella strains were isolated and serotyped. seventy-one shigella flexneri strains were characterized by mic determination, pulsed-field gel electrophoresis (pfge), and detection of genes encoding cephalosporin resistance. most infections were caused by s. flexneri variant x [iv:(7),8] (27.6%), s. sonnei (24.2%), and s. flexneri 2a (20.8%). however, large regional differences ... | 2010 | 21068291 |
| genomic portrait of the evolution and epidemic spread of a recently emerged multidrug-resistant shigella flexneri clone in china. | shigella flexneri is the major cause of shigellosis in developing countries. a new s. flexneri serotype, xv, appeared in 2000 and replaced serotype 2a as the most prevalent serotype in china. serotype xv is a variant of serotype x, with phosphoethanolamine modification of its o antigen mediated by a plasmid that contained the opt gene. serotype xv isolates belong to sequence type 91 (st91). in this study, whole-genome sequencing of 59 s. flexneri isolates of 14 serotypes (serotypes 1 to 4, y, yv ... | 2014 | 24452172 |
| [analysis of etiological surveillance results of shigella spp between 2009 and 2010 in henan province]. | to explore the etiologic characteristics of bacillary dysentery found in henan province, between year 2009 and 2010. | 2012 | 22800632 |