期刊
JOURNAL OF CLINICAL MICROBIOLOGY
卷 60, 期 8, 页码 -出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/jcm.00533-22
关键词
antimicrobial resistance; cgMLST; genotypic resistance; whole-genome sequencing
类别
资金
- National Institute of Allergy and Infectious Diseases of the National Institutes of Health [UM1AI104681]
- ContraFect
- TenNor Therapeutics Limited
- BioFire
- Adaptive Phage Therapeutics
Whole-genome sequencing is replacing traditional typing methods for investigating infectious disease outbreaks and predicting antimicrobial susceptibility. In this study, cgMLST was used to analyze a well-characterized collection of A. baumannii, showing concordance with previous PCR/ESI-MS results. There was a high level of agreement between genotypic and phenotypic antimicrobial susceptibility.
Whole-genome sequencing (WGS) is rapidly replacing traditional typing methods for the investigation of infectious disease outbreaks. Additionally, WGS data are being used to predict phenotypic antimicrobial susceptibility. Acinetobacter baumannii, which is often multidrug-resistant, is a significant culprit in outbreaks in health care settings. A well-characterized collection of A. baumannii was studied using core genome multilocus sequence typing (cgMLST). Seventy-two isolates previously typed by PCR-electrospray ionization mass spectrometry (PCR/ESI-MS) provided by the Antimicrobial Resistance Leadership Group (ARLG) were analyzed using a clinical microbiology laboratory developed workflow for cgMLST with genomic susceptibility prediction performed using the ARESdb platform. Previously performed PCR/ESI-MS correlated with cgMLST using relatedness thresholds of allelic differences of <= 9 and <= 200 allelic differences in 78 and 94% of isolates, respectively. Categorical agreement between genotypic and phenotypic antimicrobial susceptibility across a panel of 11 commonly used drugs was 89%, with minor, major, and very major error rates of 8%, 11%, and 1%, respectively.
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