alexa Non-Multidrug-Resistant, Methicillin-Resistant Staphylococcus aureus Causing Infection in Health-care Facilities in Southern Brazil
ISSN: 2161-0703

Journal of Medical Microbiology & Diagnosis
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Research Article

Non-Multidrug-Resistant, Methicillin-Resistant Staphylococcus aureus Causing Infection in Health-care Facilities in Southern Brazil

Ana Paula Becker1*, Vlademir Vicente Cantareli1, Fernanda CP Rossato1, Fernanda Matsiko Inoue3, Cícero Dias1,2 and Pedro Alves d’Azevedo1

1Federal University of Health Sciences of Porto Alegre, Brazil

2Mother of God Hospital, Porto Alegre, Brazil

3Special Laboratory of Clinical Microbiology, Federal University of São Paulo, Brazil

*Corresponding Author:
Ana Paula Becker
Federal University of Health Sciences of Porto Alegre, Brazil
Tel: 555133038739
E-mail: [email protected]

Received Date: April 24, 2014; Accepted Date: August 21, 2014; Published Date: August 23, 2014

Citation: Becker AP, Cantareli VV, Rossato FCP, Inoue FM, Dias C, et al. (2014) Non-Multidrug-Resistant, Methicillin-Resistant Staphylococcus aureus Causing Infection in Health-care Facilities in Southern Brazil. J Med Microb Diagn 3:150. doi: 10.4172/2161-0703.1000150

Copyright: © 2014 Becker AP, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricteduse, distribution, and reproduction in any medium, provided the original author and source are credited.



Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) is usually susceptible to a variety of non-beta-lactam drugs. These isolates commonly display SCCmecIV and are associated with community-acquired infections. More recently, CA-MRSA has been isolated from health-care-associated diseases. We categorize isolates resistant only to oxacillin or oxacillin plus no more than 3 non-beta-lactam antibiotics according to clinical and epidemiological characteristics, from a hospital in Porto Alegre, and performed a combination of molecular techniques including mecA, SCCmec, Panton-Valentine leukocidin (PVL) detection and Pulsed-field gel electrophoresis (PFGE). A total of twenty-five patients with non-multidrug-resistant MRSA were studied. Nineteen (76%) came from skin and soft tissue infections. All isolates presented SCCmec type IV (being 19/25 IVc) whereas the PFGE profile most frequently found was OSCP-like (15/25). The presence of international clones USA400, USA300 was also verified. Comparing the results of clonal type with source, origin, type of SCCmec, presence the PVL gene and antimicrobial resistance we observed that OSCP-like PFGE profile was associated with skin and soft tissue infections (P=0.0012) and that this clonal group was strongly associated with the presence of PVL gene (P<0.001). This study shows a clonal diversity of CA-MRSA and strengths the concept that these isolates emerged globally from different backgrounds.


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