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Discrepancies between results by E-test and standard microbroth dilution testing of Streptococcus pneumoniae for
F B Hashemi1, G E Schutze, E O Mason
1Department of Pathology and Laboratory Medicine, University of Texas Health Science Center at Houston, USA.
Journal of Clinical Microbiology
|June 1, 1996
Abstract:
Vancomycin susceptibility testing of Streptococcus pneumoniae by the E-test consistently resulted in MICs that were at the upper limit of the 1-microgram/ml susceptible category defined by current National Committee for Clinical Laboratory Standards guidelines and were always higher than MICs obtained by microbroth dilution. Three of five E-test results for S. pneumoniae ATCC 49619 were higher than the acceptable limits.