Shigella sonnei has become predominant species causing shigellosis in Shanghai. Two hundred ninety-three S. sonnei were isolated in sentinel hospitals of Shanghai in 2011. We found an emergence of 8 strains of S. sonnei with negative phenotype for o-nitrophenyl-β-d-galactopyranoside in late August, which showed distinct pulsed-field gel electrophoresis patterns from the other 285 S. sonnei and had genes deletion in lac and mhp operons.
All Keywords
【저자키워드】 emergence, phenotype, gene deletion, Shigella sonnei, ONPG-negative,
【저자키워드】 emergence, phenotype, gene deletion, Shigella sonnei, ONPG-negative,