Spurious Ampicillin Resistance by Testing Haemophilus influenzae with Agar Containing Supplement C
Open Access
- 1 January 1976
- journal article
- Published by American Society for Microbiology in Antimicrobial Agents and Chemotherapy
- Vol. 9 (1) , 199-200
- https://doi.org/10.1128/aac.9.1.199
Abstract
Ampicillin resistance (minimal inhibitory concentration ≥10 μg/ml) in the absence of beta-lactamase activity by Haemophilus influenzae was noted in tests performed with Mueller-Hinton agar containing one lot of supplement C. All strains, except five with known resistance due to beta-lactamase activity, were inhibited by 0.6 μg or less of ampicillin per ml of chocolatized blood agar.Keywords
This publication has 3 references indexed in Scilit:
- Simplified Medium for Ampicillin Susceptibility Testing of Haemophilus influenzaeAntimicrobial Agents and Chemotherapy, 1975
- Ampicillin Resistance in Haemophilus influenzae as Determined by a Rapid Test for Beta-Lactamase ProductionAntimicrobial Agents and Chemotherapy, 1974
- Antimicrobial Susceptibility of Haemophilus influenzaeAntimicrobial Agents and Chemotherapy, 1974