ISSN: 0973-7510

E-ISSN: 2581-690X

Vinita Rawat1 , Punam Bisht2 and Arundhati Bag2
1Department of Microbiology, ²Department of Biotechnology, Government Medical College, Haldwani, India.
J Pure Appl Microbiol. 2012;6(1):455-458
© The Author(s). 2012
Received: 30/05/2011 | Accepted: 06/07/2011 | Published: 31/03/2012
Abstract

Resistance in gram positive bacteria not only increases morbidity and mortality, but also the costs of management of hospitalized patients. The determination of antimicrobial susceptibility of a clinical isolates is often crucial for the optimal antimicrobial therapy of the infected patients.  There have been reports indicating increase in the ratio of Staphylococci resistance to Macrolide-Lincosamide-Streptogramin B (MLSB) group and failure in the treatment with clindamycin infection with microorganisms with inducible resistance to MLSB group. The present study was undertaken considering the paucity data   on inducible MLSfrom a tertiary care centre in Haldwani, (Nainital).  A total of 182 gram positive cocci obtained from consecutive clinical specimens were included, consisting of 19.7% methicillin resistant Staphylococcus aureus (MRSA), 41.7% methicillin sensitive S. aureus (MSSA), 8.7% methicillin-resistant coagulase-negative staphylococci (MRCNS), 17.5% methicillin-sensitive coagulase-negative staphylococci (MSCNS) isolates and 12% Streptococcus spp.  Of the 182 isolates, 61 (33.5%) had ER-R (erythromycin resistant) and CL-S (clindamycin sensitive) phenotype. Among 61 ER-R and CL-S isolates, 30 (49%) were recorded as inducible clindamycin resistance. Since the rate of inducible clindamycin is high (49% in our study), accurate reporting of inducible MLSB   would allow the clinician to retain confident in clindamycin.

Keywords

MLSBi  phenotype, Erythromycin, Clindamycin

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© The Author(s) 2012. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.