In vitro susceptibility of Haemophilus influenzae to cefixime.

AUTOR(ES)
RESUMO

The in vitro activity of cefixime against 2,458 clinical isolates of Haemophilus influenzae was determined. All the strains were inhibited by less than or equal to 2 micrograms of cefixime per ml, and the modal MIC was 0.03 micrograms/ml. Activity was unaffected by the presence of beta-lactamase produced by 157 isolates. Nineteen of the twenty-four isolates for which cefixime MICs were greater than or equal to 0.5 micrograms/ml were beta-lactamase negative but showed reduced susceptibility to ampicillin.

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