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Agar diffusion tests with cefuroxime disks for predicting ceftriaxone susceptibility among isolates of Streptococcus pneumoniae
Author(s) -
Cícero Armídio Gomes Dias,
Ivonyr Abdel Kader,
Pedro Alves d’Azevedo,
Silvana Superti,
D.O.E. Alves,
Gislaine Silveira Olm
Publication year - 1998
Publication title -
revista de microbiologia
Language(s) - English
Resource type - Journals
eISSN - 1678-9881
pISSN - 0001-3714
DOI - 10.1590/s0001-37141998000400016
Subject(s) - ceftriaxone , cefuroxime , microbiology and biotechnology , streptococcus pneumoniae , agar , biology , medicine , antibiotics , bacteria , genetics
The performance of agar diffusion tests using disks of cefuroxime (30µg) for predicting ceftriaxone susceptibility in 33 isolates of Streptococcus pneumoniae was studied. All 7 resistant isolates to ceftriaxone (MIC ³1.0 µg/ml) exhibited zones of inhibition <28mm. The procedure can be easily adapted to clinical laboratories. O desempenho do teste de difusão em ágar usando-se discos de cefuroxima (30 µg) para predizer suscetibilidade à ceftriaxona foi estudado em 33 cepas de Streptococcus pneumoniae. As 7 amostras resistentes à ceftriaxona (CIM ³1.0 µg/ml) apresentaram zonas de inibição < 28mm. O teste pode ser facilmente adaptado a laboratórios clínicos

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