Occurrence of mcr-mediated colistin resistance in Salmonella clinical isolates in Thailand.

ABSTRACT: Nontyphoidal Salmonella, an important zoonotic pathogen and a major cause of foodborne illnesses, could be a potential reservoir of plasmids harbouring mobile colistin resistance gene (mcr). This study reported, for the first time, a high rate of mcr-carrying Salmonella clinical isolates (3.3%, 24/724) in Thailand, associated with mcr-3 gene (3.0%, 22/724) in S. 4,[5],12:i:-(15.4%, 4/26), S. Typhimurium (8.8%, 5/57), and S. Choleraesuis (5.6%, 13/231). Remarkably, the increasing trends of colistin and extended-spectrum cephalosporin resistances have displayed a high agreement over the years, with a dramatic rise in the mcr-carrying Salmonella from 1.1% (6/563) during 2005-2007 to 11.2% (18/161) during 2014-2018 when CTX-M-55 became abundant. Clonal and plasmid analysis revealed that the se

SUBMITTER: Luk-In S 

PROVIDER: S-EPMC8266838 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature