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Outbreak of Infections in a Greek University Hospital Involving a Single Clone of High-Level Aminoglycoside-Resistant Enterococcus faecalis

Published online by Cambridge University Press:  02 January 2015

Spyros Pournaras
Affiliation:
Department of Microbiology, AHEPA University Hospital, Thessaloniki
Athanassios Tsakris*
Affiliation:
Department of Microbiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
Mary E. Kaufmann
Affiliation:
Laboratory of Hospital Infection, Central Public Health Laboratory, London, United Kingdom
John Douboyas
Affiliation:
Department of Microbiology, AHEPA University Hospital, Thessaloniki
Antonios Antoniadis
Affiliation:
Department of Microbiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
*
Department of Microbiology, Medical School, Aristotle University of Thessaloniki, 54 006 Thessaloniki, Greece

Abstract

Among 145 Enterococcus faecalis isolates recovered during a 15-month period (April 1997-June 1998) in AHEPA University Hospital, Thessaloniki, Greece, 94 (65%) exhibited high-level resistance to gentamicin or streptomycin and 61 (42%) to both aminoglycosides; 73% of the high-level aminoglycoside-resistant E faecalis isolates belonged to a single clone carrying the gene aac(6')-Ie-aph(2”)-Ia. These findings differ from those of other regions, where high-level aminoglycoside-resistance genes are dispersed into genetically unrelated strains.

Type
Concise Communications
Copyright
Copyright © The Society for Healthcare Epidemiology of America 2000

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References

1.Eliopoulos, GM. Increasing problems in the therapy of enterococcal infections. Eur J Clin Microbiol Infect Dis 1993;12:409412.Google Scholar
2.Murray, BE. Diversity among multidrug-resistant enterococci. Emerg Infect Dis 1998;4:3747.Google Scholar
3.Tsakris, A, Pournaras, S, Douboyas, J. Changes in antibiotic resistance of enterococci isolated in Greece. J Antimicrob Chemother 1997;40:735737.Google Scholar
4.Murray, BE, Singh, KV, Heath, JD, Sharma, BR, Weinstock, GM. Comparison of genomic DNAs of different enterococcal isolates using restriction endonucleases with infrequent recognition sites. J Clin Microbiol 1990;28:20592063.Google Scholar
5.Morrison, D, Woodford, N, Barrett, SP, Sisson, P, Cookson, BD. DNA banding pattern polymorphism in vancomycin-resistant Enterococcus faecium and criteria for defining strains. J Clin Microbiol 1999;37:10841091.Google Scholar
6.Uttley, AH, George, RC, Naidoo, J, Woodford, N, Johnson, AP, Collins, CH, et al. High-level vancomycin-resistant enterococci causing hospital infections. Epidemiol Infect 1989;103:173181.CrossRefGoogle ScholarPubMed
7.Seetulsingh, PS, Tomayko, JF, Coudron, PE, Markowitz, SM, Skinner, C, Singh, KV, et al. Chromosomal DNA restriction endonuclease digestion patterns of β-lactamase-producing Enterococcus faecalis isolates collected from a single hospital over a 7-year period. J Clin Microbiol 1996;34:18921896.Google Scholar
8.van Den Braak, N, van Belkum, AKreft, D, te Witt, R, Verbrugh, HA, Endtz, HP. The prevalence and clonal expansion of high-level gentamicin-resistant enterococci isolated from blood cultures in a Dutcb university hospital. J Antimicrob Chemother 1999;44:795798.Google Scholar
9.Ma, X, Kudo, M, Takahashi, ATanimoto, K, Ike, Y. Evidence of nosocomial infection in Japan caused by high-level gentamicin-resistant Enterococcus faecalis and identification of the pheromone-responsive conjugative plasmid encoding gentamicin resistance. J Clin Microbiol 1998;36:24602464.Google Scholar
10.Thal, LA, Chow, JW, Patterson, JE, Perri, MB, Donabedian, S, Clewell, DB, et al. Molecular characterization of highly gentamicin-resistant Enterococcus faecalis isolates lacking high-level streptomycin resistance. Antimicrob Agents Chemother 1993;37:134137.Google Scholar
11.Straut, M, de Cespedes, G, Delbos, F, Horaud, T. Molecular typing of Enterococcus faecalis strains resistant to high levels of gentamicin and isolated in Romania. J Antimicrob Chemother 1997;39:483491.Google Scholar
12.Zervos, MJ, Mikesell, TS, Schaberg, DRHeterogeneity of Plasmids determining high-level resistance to gentamicin in clinical isolates of Streptococcus faecalis. Antimicrob Agents Chemother 1986;36:7881.Google Scholar
13.Zervos, MJ, Kauffman, CA, Therasse, PM, Bergman, AG, Mikese1l, TS, Schaberg, DR. Nosocomial infection by gentamicin-resistant Streptococcus faecalis. An epidemiologic study. Ann Intern Med 1987;106:687691.Google Scholar
14.Coque, TM, Seetulsingh, P, Singh, KV, Murray, BE. Application of molecular techniques to the study of nosocomial infections caused by enterococci. In: Woodford, N, Johnson, AP, eds. Molecular Bacteriology. Totowa, NJ: Humana Press; 1998:469492.CrossRefGoogle Scholar