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Rate of isolation of Staphylococcus aureus strains possessing coagulase or clumping factor

Rate of isolation of Staphylococcus aureus strains possessing coagulase or clumping factor Correspondence Vol. 2, No. 5 Sir, The identification of Staphylococcus aureus in diagnostic laboratories is usually performed by detecting the presence of either coagulase (tube coagulase test) or clumping factor (slide coagulase test). Although most strains of Staphylococcus aureus produce both of these enzymes Some lack one or other and may be misidentifled if reliance is placed on one of these tests alone. The precise proportion of strains deficient in either property has been the subject of various previous estimates, although few of these studies were undertaken with the objective of determining the prevalence of such anomalous strains, and two of the studies were made almost 40 years ago (1,2). An investigation was therefore made to establish the precise proportion of Staphylococcus aureus lacking either coagulase or clumping factor (defective strains) which could be detected by contemporary laboratories using the two tests; an indication of the relative sensitivity of the two tests was thereby provided. During a seven month period an attempt was made to collect all strains of Staphylococcus aureus received in the microbiology laboratories of four teaching hospitals. Two of these laboratories performed presumptive identification Using the coagulase test; the other two examined for clumping factor. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png European Journal of Clinical Microbiology Infectious Diseases Springer Journals

Rate of isolation of Staphylococcus aureus strains possessing coagulase or clumping factor

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References (9)

Publisher
Springer Journals
Copyright
Copyright © 1983 by Vieweg Publishing
Subject
Biomedicine; Medical Microbiology; Internal Medicine
ISSN
0934-9723
eISSN
1435-4373
DOI
10.1007/BF02013908
Publisher site
See Article on Publisher Site

Abstract

Correspondence Vol. 2, No. 5 Sir, The identification of Staphylococcus aureus in diagnostic laboratories is usually performed by detecting the presence of either coagulase (tube coagulase test) or clumping factor (slide coagulase test). Although most strains of Staphylococcus aureus produce both of these enzymes Some lack one or other and may be misidentifled if reliance is placed on one of these tests alone. The precise proportion of strains deficient in either property has been the subject of various previous estimates, although few of these studies were undertaken with the objective of determining the prevalence of such anomalous strains, and two of the studies were made almost 40 years ago (1,2). An investigation was therefore made to establish the precise proportion of Staphylococcus aureus lacking either coagulase or clumping factor (defective strains) which could be detected by contemporary laboratories using the two tests; an indication of the relative sensitivity of the two tests was thereby provided. During a seven month period an attempt was made to collect all strains of Staphylococcus aureus received in the microbiology laboratories of four teaching hospitals. Two of these laboratories performed presumptive identification Using the coagulase test; the other two examined for clumping factor.

Journal

European Journal of Clinical Microbiology Infectious Diseases – Springer Journals

Published: Oct 1, 1983

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