Detection of Virulence Genes in Multidrug Resistant Enterococci Isolated from Feedlots Dairy and Beef Cattle: Implications for Human Health and Food Safety.

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ID: 21898
2019
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Abstract
The misuse/abuse of antibiotics in intensive animal rearing and communities led to the emergence of resistant isolates such as vancomycin-resistant enterococci (VREs) worldwide. This has become a major source of concern for the public health sector. The aim of this study was to report the antibiotic resistance profiles and to highlight the presence of virulence genes in VREs isolated from feedlots cattle of the North-West Province of South Africa. 384 faecal samples, 24 drinking troughs water, and 24 soil samples were collected aseptically from 6 registered feedlots. Biochemical and molecular methods were used to identify and categorise the enterococci isolates. Their antibiotic resistance profiles were assessed and genotypic methods were used to determine their antibiotic resistance and their virulence profiles. 527 presumptive isolates were recovered, out of which 289 isolates were confirmed as sp. Specifically, (9%), (10%), (69%), (6%), (2%), (2%), and (2%) were screened after molecular assays. (62%), (17%), and (21%) resistance genes were detected in 176 sp., respectively. Moreover, (26), (57), (111), and (9) efflux pump genes were detected in 138 VRE isolates. Multiple antibiotic resistances were confirmed in all the VRE isolates of this study; the most common antibiotic resistance phenotype was TET-AMP-AMX-VAN-PEN-LIN-ERY. , , , , and virulence genes were detected in 86 VREs with the exception of vancomycin-resistant isolates that did not display any virulence factor. Most VRE isolates had more than one virulence genes but the most encountered virulence profile was . Potentially pathogenic multidrug resistant VREs were detected in this study; this highlights the impact of extensive usage of antimicrobials in intensive animal rearing and its implications on public health cannot be undermined.
Reference Key
tatsing-foka2019detectionbiomed Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Tatsing Foka, Frank Eric;Ateba, Collins Njie;
Journal BioMed research international
Year 2019
DOI
10.1155/2019/5921840
URL
Keywords Keywords not found

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