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Title: High frequency and diversity of Vancomycin-resistant Enterococci (VRE) in Algerian healthcare settings. Author: Zerrouki H, Rebiahi SA, Hadjadj L, Ahlem F, Elhabiri Y, Sedrati T, Rolain JM, Diene SM. Journal: Infect Genet Evol; 2021 Aug; 92():104889. PubMed ID: 33933632. Abstract: The spread of vancomycin-resistant Enterococci (VRE) in Algerian hospital settings is poorly reported. Since the first report in 2006, few data have been available on the molecular mechanism of this resistance across the country. In this study, we investigate the frequency and antibiotic resistance mechanisms of Enterococci strains isolated from hospitalised patients in the Tlemcen university hospital. 191 Enterococcus spp. strains were collected from various clinical samples and were identified using MALDI-TOF-MS. The presence of van genes was investigated by standard PCR and sequencing. Results revealed that E. faecium and E. faecalis strains are the main pathogens identified in the study. Antibiotic susceptibility testing revealed that the resistance rate was high for the majority of antibiotic classes, including glycopeptides, and only linezolid was effective on all strains. Molecular analysis revealed that 52.2% of strains from intensive care unit (ICU) were positive for the vanA gene, including 44.44% E. faecium, 5.55% E. faecalis and 2.22% E. avium. 25.5% of these isolates co-harboured both the vanA and vanC genes, including E. gallinarum (n = 16) and E. faecium (n = 6). In surgical wards (SW) 29.70% of strains harboured the van genes, including 4.90% of E. faecalis harbouring the vanB gene, and of the rest of strains, (24.80%) harboured the vanC genes. Indeed, 9.90% E. gallinarum and 4.90% E. faecalis were positive for vanC1 and 9.90% of E. casseliflavus were positive for the vanC2/C3 gene. The glycopeptide resistance rate was higher among strains from the ICU and was mainly composed by E. faecium strains compared with surgical wards where resistant E. faecalis strains were predominant.[Abstract] [Full Text] [Related] [New Search]