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Comparative Study
. 1994 Jun;32(6):1594-6.
doi: 10.1128/jcm.32.6.1594-1596.1994.

Comparison of agar dilution, broth dilution, and disk diffusion testing of ampicillin against Haemophilus species by using in-house and commercially prepared media

P C Kohner  1 , J E Rosenblatt, F R Cockerill 3rd
Affiliations
Comparative Study

Comparison of agar dilution, broth dilution, and disk diffusion testing of ampicillin against Haemophilus species by using in-house and commercially prepared media

P C Kohner et al. J Clin Microbiol. 1994 Jun.

Abstract

An evaluation to determine the optimal method for the in vitro susceptibility testing of Haemophilus strains to ampicillin was undertaken. In our hands, in-house-prepared Haemophilus Test Medium used by either the broth macrodilution or agar dilution method produced the most consistent results, especially for beta-lactamase-negative, ampicillin-resistant H. influenzae strains.

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