Molecular Characterization of Methicillin-Resistant Staphylococcus epidermidis Clones: Evidence of Geographic Dissemination

Author:

Miragaia Maria1,Couto Isabel12,Pereira Sandro F. F.1,Kristinsson Karl G.3,Westh Henrik4,Jarløv Jens O.5,Carriço João6,Almeida Jonas67,Santos-Sanches Ilda18,de Lencastre Hermínia19

Affiliation:

1. Molecular Genetics Laboratory, Instituto de Tecnologia Química e Biológica

2. Centro de Recursos Microbiológicos, Faculdade de Ciências e Tecnologia

3. Department of Clinical Microbiology, Landspitali-University Hospital, Reykjavik, Iceland

4. Hvidovre Hospital, Hvidovre

5. Department of Clinical Microbiology, Herlev Hospital, Herlev, Denmark

6. Biomathematics Laboratory, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras

7. Department of Biometry and Epidemiology, Medical University of South Carolina, Charleston, South Carolina

8. Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Monte de Caparica, Portugal

9. Laboratory of Microbiology, The Rockefeller University, New York, New York

Abstract

ABSTRACT Denmark and Iceland are countries where the frequency of methicillin-resistant Staphylococcus aureus is very low due to strict infection control and restrictive antibiotic use policies. In contrast, methicillin-resistant S. epidermidis (MRSE) continues to be isolated as a nosocomial pathogen. The molecular typing by pulsed-field gel electrophoresis (PFGE) of 136 MRSE isolates from five hospitals in Denmark and 94 MRSE isolates from one hospital in Iceland collected in 1997 and 1998 defined 40 different patterns. Closely related PFGE types were found in isolates recovered in Iceland, Denmark, Mexico, Uruguay, Greece, and Cape Verde, evidencing for the first time the geographic clonal dissemination of MRSE strains. The large majority (87.4%) of the MRSE isolates studied were multiresistant.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

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