ISSN: 0973-7510

E-ISSN: 2581-690X

Surekha Y. Asangi , J. Mariraj, S. Krishna, T.S. Kumudini, Nagabhushan and Rashmi
Department of Microbiology, Vijayanagar Institute of Medical Sciences, Bellary – 583 104, India.
J Pure Appl Microbiol. 2012;6(2):937-940
© The Author(s). 2012
Received: 06/08/2011 | Accepted: 15/09/2011 | Published: 30/06/2012

Coagulase-negative Staphylococci (CoNS) are common colonizers of the human skin and usually contaminants when isolated from a clinical specimen. These organisms have become increasingly recognized as agents of clinically significant nosocomial blood stream infections. The study was undertaken to identify the prevalence of clinical isolates of CoNS and their speciation. A total of 84 isolates were collected from different samples and subjected to biochemical characterization using conventional microbiological methods. 96% isolates were conveniently identified. Staphylococcus .epidermidis (36,  42.8%), S.saprophyticus (25,29.7 %), S.haemolyticus (15,17.8%),  S.lugdunensis (2,2.3 %), S.warneri (2, 2.3%),  S.cohnii (1,1.1%), and others(3,3.5%).These 3 isolates were not identified to the species level. The increasing recognition of pathogen potential CoNS and emergence of drug resistance among them, demonstrates the need to adopt simple laboratory procedure to identify CoNS and determine the prevalence and their speciation. The species identification and differentiation help in monitoring the reservoir and distribution of CoNS involved in nosocomial infections and determining the etiological agents in the hospitals.


Coagulase Negative Staphylococci, ornithine decarboxylase, speciation

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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.