Frecuencia de portadores nasales de staphylococcus aureus resistente a la meticilina (sarm) y factores asociados a colonización en estudiantes de Medicina de la Universidad de Cuenca en el año 2015

Abstract

BACKGROUND: Worldwide, many studies have documented that the frequency of nasal carriage of methicillin-resistant Staphylococcus aureus (MRSA) is higher in health personnel; however, in our country it is not yet available about medical students who may be colonized during their hospital practices becoming potential disseminators of this bacterium. GENERAL OBJECTIVE: To determine the frequency of nasal carriage of methicillin-resistant Staphylococcus aureus and the factors associated with colonization in medical students at the University of Cuenca in 2015. METHODOLOGY: A cross-sectional quantitative study collected information from 104 students in tenth cycle of medicine at the University of Cuenca; concomitantly , they were took nasal swabs for the respective microbiological cultures. The sample was calculated at 3.1 EPIDAT program, with a prevalence of 11% and a confidence interval (CI) of 95 %. Data were analyzed using SPSS software and the results are presented in frequency tables. RESULTS: The prevalence of nasal carriers of S. aureus in medical students was 25%, with 1.92% MRSA. Antibiotic resistance in S. aureus strains isolated was 80.77% penicillin, 34.62% erythromycin and 7.69% trimethoprim sulfamethoxazole. CONCLUSION: The prevalence of nasal carriage of MRSA was 1.92 %, indicating that medical students may be reservoirs and carriers of this bacterium, settling in potential risk to the hospital population and to the community