| 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 |