Evaluation of Commercial Products for Colistin and Polymyxin B Susceptibility Testing for -Positive and Negative and in China.

Purpose: To evaluate the performance of five widespread commercial products for colistin and polymyxin B susceptibility testing in China for -positive and -negative and .

Methods: A total of 132 and 83 strains (including 68 -positive and 28 -positive ) were collected. We analysed the performance of colistin susceptibility (with Vitek 2 and Phoenix M50) and the performance of polymyxin B susceptibility (with DL-96II, MA120, and a Polymyxin B Susceptibility Test strip; POL E-strip).

Epidemiology and genotypic characteristics of carbapenem resistant Enterobacterales in Henan, China: a multicentre study.

Objectives: To identify the carbapenemase and colistin resistance genes and epidemiological status of carbapenem-resistant Enterobacterales (CRE) among 7 secondary and 11 tertiary hospitals in Henan province, China.

Methods: CRE isolates and clinical data of infected patients were collected from 7 secondary and 11 tertiary hospitals in Henan from July to September 2019 and analysed retrospectively. Polymerase chain reaction (PCR) and gene sequencing were performed to detect carbapenemase and colistin resistance genes; multilocus sequence typing was also performed.

Molecular Mechanism of Polymyxin Resistance in Multidrug-Resistant and Isolates from Henan Province, China: A Multicenter Study.

Purpose: To evaluate polymyxin-resistant and prevalence and characteristics in the Henan province, China.

Materials And Methods: A total of 2301 bacterial isolates collected at six hospitals were assessed. Their response to polymyxin was evaluated by minimum inhibitory concentration (MIC) analysis, and the mobilized colistin resistance (mcr) and carbapenemase gene were explored.