Identification and Differentiation of Coagulase-Negative Staphylococcus aureus by Polymerase Chain Reaction

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Staphylococcus aureus is an etiological agent of a wide variety of human and animal infections. The majority of S. aureus are coagulase-positive; however, some may be atypical in that they do not produce coagulase. Incorrect identification of an isolate can impact implementation of effective treatment and/or control measures. In this study, polymerase chain reaction-based DNA finger-printing was used to differentiate coagulase-positive Staphylococcus aureus (CPSA) from coagulase-negative Staphylococcus aureus (CNSA). A total of 29 CNSA and 50 CPSA were evaluated. PCR-based DNA fingerprinting differentiated CNSA from CPSA on the basis of visible observation and densitometric evaluation. The method is rapid and accurate, eliminating variability associated with conventional techniques.


Document Type: Research Article

Affiliations: 1: Department of Food Science, Rutgers University, New Brunswick, New Jersey 08903, USA 2: Institute of Agriculture, The University of Tennessee, Knoxville, Tennessee 37901, USA

Publication date: June 1, 1997

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