Vol. 1 No. 1 (2020): February
Clinical Microbiology

Prevalence and genotypic characterization of methicillin-resistant strains of Staphylococcus aureus isolated in a Mexican regional hospital

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  • Rosa María Martínez Medina,
  • Fernando D Montalvo- Sandoval,
  • Martin Magaña- Aquino,
  • Yolanda Terán- Figueroa,
  • José T Pérez- Urizar
Rosa María Martínez Medina
Universidad Autónoma de San Luis Potosí
Bio
Fernando D Montalvo- Sandoval
Universidad Autónoma de San Luis Potosí
Martin Magaña- Aquino
Universidad Autónoma de San Luis Potosí
Yolanda Terán- Figueroa
Universidad Autónoma de San Luis Potosí
José T Pérez- Urizar
Universidad Autónoma de San Luis Potosí

Published 2020-03-23

Keywords

How to Cite

1.
Martínez Medina RM, Montalvo- Sandoval FD, Magaña- Aquino M, Terán- Figueroa Y, Pérez- Urizar JT. Prevalence and genotypic characterization of methicillin-resistant strains of Staphylococcus aureus isolated in a Mexican regional hospital. Rev. Chilena. Infectol. [Internet]. 2020 Mar. 23 [cited 2025 Nov. 28];1(1). Available from: https://revinf.cl/index.php/revinf/article/view/186

Copyright (c) 2020 Rosa María Martínez Medina, Fernando D Montalvo- Sandoval, Martin Magaña- Aquino, Yolanda Terán- Figueroa, José T Pérez- Urizar

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Background: Staphylococcus aureus is one of most prevalent pathogens in the world associated with a high mortality rate and a rapid development of resistance to antibiotics. Despite its pathogenicity, epidemiological monitoring in Mexico is scarce. Aim: To analyze the local molecular epidemiology and determine the clonal origin of methicillin-resistant (MR) strains isolated from patients admitted to Hospital “Dr. Ignacio Morones Prieto”. Methods: A cross-sectional prospective study was carried out from July to December 2016. The characterization of the strains was carried out by Spa genotyping, frequency of specific virulence genes by PCR and antibiogram. Results: The prevalence of MRSA was 25.7%, highlighting the presence of the Spa type t895 in 76% of the resistant strains and a similar pattern of susceptibility to antibiotics. Conclusion: The results of this study indicate that the regional prevalence of MRSA has not changed in the last 10 years and provide valuable information on the clonal origin and the virulence factors of the strains of S. aureus isolated in the region.
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