Int J Oral Biol.  2010 Dec;35(4):185-190.

Pattern of Methicillin-resistant Staphylococcus aureus in Dental and Medical Environments

  • 1Department of Laboratory Medicine, Veterans Hospital, Daejeon 306-830, Korea.
  • 2Jeonju Biomaterials Institute, Jeonju 561-360, Korea.
  • 3Department of Clinical Laboratory Science, Wonkwang Health Science College, Iksan 570-750 Korea.
  • 4Department of Oral Microbiology & Immunology, School of Dentistry, & Institute of Biotechnology Wonkwang University, Iksan 570-749 Korea.


Methicillin-resistant Staphylococcus aureus (MRSA) is one of the most prevalent pathogens in hospitals. To investigate cross contamination by this bacterium in both dental and medical settings, the pathogens that cause acute pyogenic infection and one of the major microbes responsible for nosocomial infection were isolated from health care providers, nurses and patients. We used VITEK II to measure drug sensitivity, and we further performed biochemical testing, coagulase serotype testing and pulse-field gel electrophoresis (PFGE) for isolated MRSA colonies. The isolation rate of Staphylococcus aureus from nasal swabs was 75.0% from dental health care providers and 18.8% from the medical health care providers. A total of 10 MRSA strains were isolated from 40 health care providers and 2 patients and the prevalent coagulase serotype from patients and health care providers was VII. The antimicrobial drug resistance and partial PFGE types of the isolated MRSA strains showed a similar pattern. These results suggest that MRSA may be one of the principal causes of nosocomial infection in dental and medical hospitals.


MRSA; antimicrobial agents; coagulase type
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