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Background:
Staphylococcus aureus is a major cause of serious hospital and community acquired infections, particularly in colonized individuals.
Archives of Pediatric Infectious Diseases
The Official Journal of Pediatric Infections Research Center, SBMU
e-ISSN 2322-1836
p-ISSN 2322-1828
Vancomycin and Linezolid Resistant Staphylococcus in Hospitalized Children
Authors
1Pediatric Infections Research Center, Mofid Children Hospital, Shahid Beheshti University of Medical Sciences, arminsh_2000@yahoo.com, IR Iran
2Pediatric Infections Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, IR Iran
3Department of Microbiology, Iranian Reference Health Laboratory, Ministry of Health and Medical Education, IR Iran
*Corresponding Author: Shahnaz Armin, Pediatric Infections Research Center, Department of Pediatric Infectious Diseases, Mofid Children Hospital, Shahid Beheshti University of Medical Sciences, Dr. Shariati Ave, arminsh_2000@yahoo.com, IR Iran. Tel: +98-2122226941. Fax: +98-2122226941. Email: arminsh_2000@yahoo.com
Published online:Apr 02, 2013
Article type:Research Article
Received:Apr 17, 2012
Accepted:Aug 11, 2012
How to Cite:Armin S, Rouhipour A, Fallah F, Rahbar M, Ebrahimi M. Vancomycin and Linezolid Resistant Staphylococcus in Hospitalized Children. Arch Pediatr Infect Dis. 2013;1(1):. doi: https://doi.org/10.5812/pedinfect.5190
Abstract
Objectives:
The study was carried out in a tertiary care center in Tehran, Iran to identify the frequency of hospital acquired methicillin resistant Staphylococcus aureus (HA-MRSA ) colonization and its antibiotic susceptibility pattern and molecular characteristics.
Patients and Methods:
This point-prevalence study was performed on 631 children who were admitted for at least 48 hours in different wards of Mofid childrens hospital in Tehran, Iran. Samples from anterior nares of these children were taken with sterile swab and cultured. If Staphylococcus aureus (S. aureus) was isolated, methicillin resistance and antibiotic susceptibility pattern were diagnosed according to Center for Disease Control and Prevention (CDC) guidelines of 2011 and Clinical and Laboratory Standards Institute (CLSI), and molecular analysis were determined by minimum inhibitory concentration (MIC) and polymerase chain reaction (PCR) methods.
Results:
Rate of colonization with S. aureus and methicillin resistant Staphylococcus aureus (MRSA) were 3.2% and 1.1% (1.1% of total and 35% of S. aureus isolates), respectively. All MRSA isolates were susceptible to rifampin and clindamycin. Resistance to vancomycin was reported in six Staphylococcus strains. Resistance to linezolid was detected in 19/20 Staphylococcus. Molecular analysis of isolates showed that all vancomycin resistant S. aureus isolates contained Van A or Van B gene, and 15/19 linezolid resistant strain was positive for chloramphenicol-florfenicol resistant gene ( cfr gene).
Conclusions:
The rate of MRSA colonization varies in any area, and the knowledge of acquisition risk factors and antibiotic susceptibility pattern are essential in prevention and treatment of MRSA infections. Based on our study, we suggest that clindamycin and rifampin are good choices in empiric treatment of patients suspected to have HA- MRSA infections until results of culture and antibiotic susceptibility pattern are prepared. In respect to the prevalence of linezolid resistance in this study, we suggest avoiding the use of linezolid as empiric therapy in HA-Staphylococcus infection.
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Copyright
© 2013, Author(s). This open-access article is available under the Creative Commons Attribution 4.0 (CC BY 4.0) International License (https://creativecommons.org/licenses/by/4.0/), which allows for unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited.
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