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[Significant increase in the colonisation of Staphylococcus aureus among medical students during their hospital practices]. | LitMetric

[Significant increase in the colonisation of Staphylococcus aureus among medical students during their hospital practices].

Enferm Infecc Microbiol Clin

Departamento de Microbiología, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, España; Servicio de Microbiología, Hospital Clínico San Carlos, Madrid, España. Electronic address:

Published: October 2013

AI Article Synopsis

Article Abstract

Introduction: Staphylococcus aureus is a pathogen of major concern. The emergence of methicillin-resistant S. aureus (MRSA) has increasingly complicated the therapeutic approach of hospital-acquired infections. Surveillance of MRSA and control measures must be implemented in different healthcare settings, including screening programs for carriers. Our first aim was to determine the prevalence of methicillin-susceptible S. aureus (MSSA) and MRSA nasal carriage in medical students from the Clínico San Carlos Hospital (Madrid). As the MRSA carrier rate in healthcare workers is higher than in the general population, we hypothesised that carrier rate could be increased during their clinical practice in their last three years.

Methods: We performed an epidemiologic al study of the prevalence of S. aureus colonisation among a group of medical students, who were sampled in 2008 in their third-year, and in 2012 when this class was in its sixth year.

Results: We have found a significant increase in MSSA carriage, from 27% to 46%. There were no MRSA colonisations in the third-year, but one was found in the sixth-year group. The large majority of strains (89%) of strains were resistant to penicillin, and 27% to erythromycin and clindamycin. As 19 coagulase-negative Staphylococcus MR were also identified, a horizontal transfer of genes, such as mecA gene to S. aureus, could have occurred.

Conclusions: Medical students are both, at risk for acquiring, and a potential source of nosocomial pathogens, mainly MSSA. Therefore, they should take special care for hygienic precautions, such as frequent and proper hand washing, while working in the hospital.

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Source
http://dx.doi.org/10.1016/j.eimc.2012.09.017DOI Listing

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