Background: Enterococci are opportunistic pathogens and are one of the most important bacteria in hospital-acquired infections. Their resistance to antibiotics such as vancomycin has led to life-threatening and difficult-to-treat nosocomial infections. The true prevalence in clinical settings in Nigeria is not well known due to the lack of a comprehensive antibiotic surveillance system. This study aims to estimate the prevalence of vancomycin-resistant enterococci (VRE) in clinical infections in Nigeria.

Methods: Databases (PubMed, , and Google scholar) were searched following the Preferred Reporting Items for Systematic review and meta-analysis protocols (PRISMA-P) 2015 statements for articles reporting VRE prevalence, and were published before August 5, 2020. Data from the studies were extracted and analyzed using Microsoft Excel and Comprehensive Meta-Analysis (CMA 3.0), respectively. The pooled prevalence of VRE was estimated with the random-effects model and the 95% confidence interval (CI). The heterogeneity level was assessed using Cochran Q and tests.

Results: A total of 35 articles were scanned for eligibility, among which 7 were included in the study after fulfilling the eligibility criteria. The studies analyzed a total of 832 enterococci isolates and 90 VRE strains. The prevalence of and in this study are 361 (59.3%) and 248 (40.7%), respectively, among which 41 (63.1%) of the and 24 (36.9%) of the were vancomycin resistant. The pooled prevalence of VRE was estimated at (95% CI; 10.0-53.9%;  = 93.50%;  < .001). The highest prevalence of VRE was reported from western Nigeria, 14.6% (95% CI;  = 97.27;  < .001).

Conclusion: The prevalence of VRE in Nigeria according to the reports from this study is relatively high. The report of this study should help policymakers to put in place measures that will help curb the spread of VRE and associated resistant genes to other important clinical pathogens like .

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8055482PMC
http://dx.doi.org/10.1097/j.pbj.0000000000000125DOI Listing

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