Publications by authors named "A John Petkau"

The Comprehensive Antibiotic Resistance Database (CARD; card.mcmaster.ca) combines the Antibiotic Resistance Ontology (ARO) with curated AMR gene (ARG) sequences and resistance-conferring mutations to provide an informatics framework for annotation and interpretation of resistomes.

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Whole genome sequencing (WGS) of supports both molecular typing and detection of antimicrobial resistance (AMR). Here, we evaluated the correlation between phenotypic antimicrobial susceptibility testing (AST) and in silico prediction of AMR from WGS in ( = 1321) isolated from human infections in Canada. Phenotypic AMR results from broth microdilution testing were used as the gold standard.

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Article Synopsis
  • A One-Health study investigated antimicrobial resistance (AMR) in Enterococcus spp. by collecting samples from humans, beef cattle, and various environmental sources over two years.
  • The main species identified were Enterococcus faecium and Enterococcus faecalis in urban and clinical settings, while Enterococcus hirae predominated in cattle environments.
  • Whole-genome sequencing revealed distinct adaptations to their environments, with significant differences in resistance profiles indicating varying antimicrobial use practices across human and animal sectors.
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Background: Mycobacterium abscessus is a rapid growing nontuberculous mycobacteria (NTM) and a clinically significant pathogen capable of causing variable infections in humans that are difficult to treat and may require months of therapy/surgical interventions. Like other NTMs, M. abscessus can be associated with outbreaks leading to complex investigations and treatment of affected cases.

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