Screening for cephalosporin-resistant Streptococcus pneumoniae with the Kirby-Bauer disk susceptibility test

I. R. Friedland, S. Shelton, G. H. McCracken

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23 Scopus citations


Kirby-Bauer disk susceptibility tests with five standard cephalosporin disks were performed on 23 penicillin-resistant Streptococcus pneumoniae isolates for which ceftriaxone MICs were 0.125 to 4 μg/ml. Cefuroxime disk inhibition zone diameters distinguished clearly isolates for which ceftriaxone MICs were ≥2 μg/ml from more susceptible strains, whereas cephalothin, ceftizoxime, cefotaxime, and ceftriaxone disks distinguished these isolates less clearly than the cefuroxime disk did.

Original languageEnglish (US)
Pages (from-to)1619-1621
Number of pages3
JournalJournal of clinical microbiology
Issue number6
StatePublished - Jan 1 1993


ASJC Scopus subject areas

  • Microbiology (medical)

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